P0576 Low Cruise Control Input Circuit

What Does It Mean?

This is a generic powertrain diagnostic trouble code (DTC) and generally applies to OBD-II equipped vehicles with cruise control. Vehicle makes may include, but are not limited to, Chevrolet (Chevy), Toyota, Ford, Harley, Dodge, Ram, Ford, etc.

The ECM (Engine Control Module) spends most of its time ensuring your engine runs as it should while keeping the manufacturer’s emissions, fuel economy, performance, noise, and comfort functions at acceptable levels. Cruise control is a great feature for long trips since you don’t need to control the vehicle’s speed. The ECM can handle it as long as the cruise control is free from any faults. If you’re reading this, your cruise control has likely stopped working. A good sign that cruise control has been completely disabled by the ECM is that the cruise control indicator on the dashboard does not light up when you try to activate it.

Generally, this fault code means that the command input has experienced an electrical malfunction stemming from many potential causes. The P0576 cruise control input circuit low and related codes (P0575 and P0577) are set when the ECM detects a malfunction in the cruise control input circuit, in this case, it means there is a low voltage condition.

Cruise Control Switches:

P0576 Brake Switch
How Severe Is This DTC?

This particular code is actually a mild issue that does not require immediate repair as engine performance will not suffer, allowing the vehicle itself to be operational. Not being able to use cruise control is the only major problem with this type of code.

That said, it is important to note that when the ECM displays a P0576, or any other P code for that matter, the vehicle may not be able to pass an emissions test. This is why clearing the code after each repair is essential before performing a new test. The mechanic will not be able to pinpoint the exact problem if it is ignored and it could lead to more serious issues in the future.
What Are Some of the Symptoms of the Code?

The most common symptom regarding the P0576 code is the fact that the cruise control itself or one of its functions stops working. Other potential symptoms may include:

CEL (Check Engine Light) will illuminate after a few driving cycles after the ECM has detected a problem
Irregular or intermittent operation of cruise control functions
The cruise control indicator is constantly on or does not light up

What Are Some of the Common Causes of the Code?

Causes

of this P0576 cruise control code can include:

The most common cause of abnormal voltage/resistance level in the cruise control input circuit is a faulty cruise control switch which could be caused by spilled liquids short-circuiting the device and/or the circuits inside.
Wiring problem (e.g., open circuit, short to ground, short to power, etc.)
ECM (Engine Control Module) problem (i.e., internal short, open, etc.)
Open or shorted cruise control switch(es)
Damaged connectors in the cruise control system
Blown fuses, which could indicate a much more serious problem. (e.g., short circuit, voltage spikes, faulty control module(s), etc.)

What Are the Diagnostic and Troubleshooting Steps for P0576?

The first step in the troubleshooting process for any malfunction is to search the Technical Service Bulletins (TSBs) for known issues with the specific vehicle.

Advanced diagnostic steps become very vehicle-specific and may require the appropriate advanced equipment and knowledge to operate accurately. We include the basic steps below, but refer to a repair guide specific to the year/make/model/powertrain for steps specific to your vehicle.
Basic Step #1

After recording the active P0576 code with your OBD-II DTC scanner, you should perform a thorough inspection of the connectors, wiring, and other parts of the vehicle’s cruise control. It is also important that any damaged connectors (e.g., broken tabs, heat damage, corroded, etc.) are replaced, reconnected, or repaired as necessary. You will need to clear the code and perform a test drive, try using the cruise control functions now. If everything works after the repair, you must ensure that the CEL (Check Engine Light) does not come back on. Otherwise, if it lights up again and the code has been recorded again in the ECM, continue your diagnostics.
Basic Step #2

Test the cruise control switch (AKA: multifunction switch). Refer to your make and model’s service manual for the desired values and diagnostic procedures specific to your vehicle. Most of the time, this will involve using your DVOM (or multimeter) to record the electrical values present. After comparing your actual values to those desired by the manufacturer, you will be able to identify the switch as the problem or rule it out as a possibility.
Basic Step #3

If the switch was found to be faulty, replacing it may not be an easy task, given that there may be airbags in the way of replacement. That said, it could be as simple as removing 1 or 2 steering column covers to access the switch. If you have identified it as your problem, found it faulty, and replaced it following the steps specific to your vehicle, test the vehicle after clearing the active codes.

This article is strictly for informational purposes only and the technical data and service bulletins for your specific vehicle should always take precedence.

High Speed Cruise Control Input Circuit

What does it mean?

This is a generic powertrain diagnostic trouble code (DTC) and generally applies to OBD-II equipped vehicles with cruise control. Vehicle makes may include, but are not limited to, Chevrolet (Chevy), Toyota, Ford, Harley, Dodge, Ram, Ford, etc.

The ECM (Engine Control Module) spends most of its time ensuring your engine runs as it should while keeping the manufacturer’s emissions, fuel economy, performance, noise, and comfort functions at acceptable levels. Cruise control is a great feature for long trips since you don’t need to control the vehicle’s speed. The ECM can handle it as long as the cruise control is free from any faults. If you’re reading this, your cruise control has likely stopped working. A good sign that the cruise control has been completely disabled by the ECM is that the cruise control indicator light on the dashboard does not illuminate when you try to activate it.

Generally, this fault code means that the command input has experienced an electrical malfunction originating from many potential causes. The P0577 Cruise Control Input Circuit High and related codes (P0575 and P0576) are set when the ECM detects a malfunction in the cruise control input circuit, in this case, it means there is a high voltage condition.

Cruise Control Switches:


P0577 Brake Switch
How severe is this DTC?

This particular code is actually a mild issue that does not require immediate repair as the engine’s performance will not suffer, allowing the vehicle itself to be operational. Not being able to use cruise control is the only major problem with this type of code.

That said, it is important to note that when the ECM displays a P0577, or any other P code for that matter, the vehicle may not be able to pass an emissions test. This is why clearing the code after each repair is essential before performing a new test. The mechanic will not be able to identify the exact problem if it is ignored, and it could lead to more serious issues in the future.
What are some of the symptoms of the code?

The most common symptom regarding the P0577 code is the fact that the cruise control system itself or one of its functions stops working. Other potential symptoms may include:

CEL (Check Engine Light) will illuminate after a few driving cycles once the ECM has detected a problem
Irregular or intermittent operation of cruise control functions
The cruise control indicator light is permanently on or does not illuminate

What are some of the common causes of the code?

Causes

of this P0577 cruise control code can include:

The most common cause of abnormal voltage/resistance level in the cruise control input circuit is a faulty cruise control switch, which could be caused by spilled liquids short-circuiting the device and/or the circuits inside.
Wiring problem (e.g., open circuit, short to ground, short to power, etc.)
ECM (Engine Control Module) problem (i.e., internal short, open, etc.)
Open or shorted cruise control switch(es)
Damaged connectors in the cruise control system
Blown fuses, which could indicate a much more serious problem. (e.g., short circuit, voltage spikes, faulty control module(s), etc.)

What are the diagnostic and troubleshooting steps for P0577?

The first step in the troubleshooting process for any malfunction is to search the Technical Service Bulletins (TSBs) for known issues with the specific vehicle.

Advanced diagnostic steps become very vehicle-specific and may require the appropriate advanced equipment and knowledge to operate accurately. We include the basic steps below, but refer to a repair guide specific to the year/make/model/powertrain for steps specific to your vehicle.
Basic Step #1

After recording the active P0577 code with your OBD-II DTC scanner, you should perform a thorough inspection of the connectors, wiring, and other parts of the vehicle’s cruise control. It is also important that any damaged connectors (e.g., broken tabs, heat damage, corroded, etc.) are replaced, reconnected, or repaired as necessary. You will need to clear the code and perform a test drive, try using the cruise control functions now. If everything works after the repair, you must ensure that the CEL (Check Engine Light) does not come back on. Otherwise, if it illuminates again and the code has been recorded in the ECM again, continue your diagnostics.
Basic Step #2

Test the cruise control switch (AKA: multifunction switch). Refer to your brand and model’s service manual for the desired values and diagnostic procedures specific to your vehicle. Most of the time, this will involve using your DVOM (or multimeter) to record the present electrical values. After comparing your actual values to those desired by the manufacturer, you will be able to identify the switch as the problem or rule it out as a possibility.
Basic Step #3

If the switch has been confirmed as faulty, replacing it may not be an easy task, given that there may be airbags in the way of replacement. That said, it could be as simple as removing 1 or 2 steering column covers to access the switch. If you have identified it as your problem, found it faulty, and replaced it following the steps specific to your vehicle, test the vehicle after clearing the active codes.

This article is strictly for informational purposes only, and the technical data and service bulletins for your specific vehicle should always take precedence.

P0578 Cruise Control Multifunction Input A Circuit Stuck

What Does It Mean?

This is a generic powertrain diagnostic trouble code (DTC) and generally applies to OBD-II vehicles. This may include, but is not limited to, vehicles from Mazda, Alfa Romeo, Ford, Land Rover, Jeep, Dodge, Chrysler, Chevy, Nissan, etc. Although generic, the exact repair steps may vary depending on the year, make, model, and powertrain configuration.

Cruise control was developed for our comfort. Its sole purpose is to manually maintain the vehicle speed set by the operator (via steering wheel buttons, the multifunction switch (i.e., turn signals, cruise control, wipers, etc.) mounted on the steering column, etc.)

Meanwhile, the operator no longer has to control the accelerator pedal, and if the vehicle is equipped with an automatic transmission (A/T), it can also control and adjust shift points based on real-time driving condition requirements.

Generally speaking here, this code would lead me to believe we are talking about the multifunction switch on your steering column. That said, location possibilities vary significantly from one manufacturer to another, so research accordingly. The cruise control button would be a good place to start narrowing down locations. This code refers to a specific input circuit in the cruise control system. To determine which wire/circuit to focus on, refer to the service manual; the letters in the codes can and will be your best reference regarding identifying the wire/circuit you are trying to diagnose/test.

When a failure occurs in the cruise control multifunction input circuit “A,” the Engine Control Module (ECM) proactively illuminates the instrument cluster with P0578 and related codes (P0564, P0578, P0579, P0580, and P0581).

Regarding the letter “A,” it could be to distinguish a connector, wire, circuit group, etc. That said, manufacturer specifications are the best resource you can have for this.

P0590 is set by the ECM when the cruise control multifunction input “A” is electronically (or possibly mechanically) “stuck.”

A cruise control stalk:
P0578 Cruise Control Stalk
How Severe Is This DTC?

Low severity for almost all cruise control faults; that said, there are many exceptions. For the most part, however, this fault should not be a source of serious concern. That said, when it comes to electrical issues, they generally worsen over time. Most of the time, this fault will be moderately affordable to fix.

Obviously, this is very subjective, so be sure to shop around for the best prices and get multiple diagnostic quotes/strategies; who knows, work orders alone might help you determine what you’re dealing with. Always stay on top of general vehicle maintenance.
What Are Some of the Symptoms of the Code?

Symptoms of a P0578 trouble code may include:

Abnormal vehicle speeds with cruise control activated
Inoperative cruise control
Cruise control indicator light on regardless of switch position
Unable to set cruise control to desired speed

What Are Some Common Causes of the Code?

Causes

of this P0578 code may include:

Faulty multifunction/cruise control switch (i.e., stuck, broken, missing, etc.)
Wiring issue (e.g., rubbing on steering column/dashboard parts, water intrusion, corrosion, etc.)
Connector malfunction (e.g., corroded pins, broken plastic tabs, swollen connector body, etc.)
Liquids/dirt/grime in the cruise control button/switch causing abnormal mechanical operation
ECM problem (e.g., water intrusion into the computer body, internal short circuit, internal overheating, etc.)

What are the troubleshooting steps for P0578?
Basic Step #1

Once your vehicle’s multifunction/cruise control switch is located, visually inspect it for any type of contamination. It is very easy for plastic buttons/switches to become dirty/greasy/sticky, making them faulty and/or operating abnormally. Ensure the mechanical operation of the switch is smooth and fluid. Any issues here should be addressed immediately. If your specific scan tool/OBD reader has the capabilities, feel free to observe the electronic operation of the switch via DATA STREAM (the mode name varies here between readers, but the important thing is to find a mode to observe real-time data).

TIP: Be careful not to spray cleaning solutions directly onto the button. Lightly dampen a clean cloth with water, soap and water, dashboard cleaner, etc., and carefully remove debris from the switch crevices. A compressed air gun will help remove debris without making the situation worse.
Basic Step #2

To access the connectors and harnesses involved in the cruise control/multifunction switch input circuit, you may need to remove some dashboard plastics/covers. Be gentle when working with plastic. Comfortable ambient temperatures always contribute to the ease of disassembling/assembling dashboard/interior plastics.

If you can easily access the connector, you may be able to apply specific troubleshooting steps provided by your service manual. Switch testing will most likely involve recording electrical values using your multimeter. This may include using the switch during recording and/or static tests. Refer to the specific make and model service manual for the “diagnostic diagram.”
Basic Step #3

A problem within the ECM is, most of the time, the last resort in diagnosis. Since this may be one of the most expensive electronic repairs you could perform on your vehicle, leave this to the professionals.
Related DTC Discussions

P0579 Multifunction Cruise Control Input A Circuit Range/Performance

What Does It Mean?

This is a generic powertrain diagnostic trouble code (DTC) and generally applies to OBD-II vehicles. This may include, but is not limited to, vehicles from Mazda, Alfa Romeo, Ford, Land Rover, Jeep, Dodge, Chrysler, Chevy, Nissan, etc. Although generic, the exact repair steps may vary depending on the year, make, model, and powertrain configuration.

Cruise control was developed for our comfort. Its sole purpose is to manually maintain the vehicle speed set by the operator (via steering wheel buttons, the multifunction switch (i.e., turn signals, cruise control, wipers, etc.) mounted on the steering column, etc.)

 

Meanwhile, the operator no longer needs to control the accelerator pedal, and if the vehicle is equipped with an automatic transmission (A/T), it can also control and adjust shift points based on real-time driving condition requirements.

Generally speaking here, this code would lead me to believe we are talking about the multifunction switch on your steering column. That said, location possibilities vary significantly from one manufacturer to another, so research accordingly. The cruise control button would be a good place to start narrowing down locations. This code refers to a specific input circuit in the cruise control system. To determine which wire/circuit to focus on, refer to the service manual; the letters in the codes can and will be your best reference regarding the identification of the wire/circuit you are trying to diagnose/test.

When a failure occurs in the cruise control multifunction input circuit “A,” the Engine Control Module (ECM) proactively illuminates the instrument cluster with P0579 and related codes (P0564, P0578, P0579, P0580, and P0581).

Regarding the letter “A,” it could be to distinguish a connector, a wire, a circuit group, etc. That said, manufacturer specifications are the best resource you can have for this.

The fault code P0579 is set by the ECM when the values of the cruise control multifunction input circuit “A” are out of range or operating abnormally.

A cruise control stalk:


P0579 Cruise Control Stalk
How Severe Is This DTC?

Low severity for almost all cruise control faults; that said, there are many exceptions. For the most part, however, this fault should not be a source of serious concern. That said, when it comes to electrical issues, they generally worsen over time. Most of the time, this fault will be moderately affordable to fix.

Obviously, this is very subjective, so be sure to shop around for the best prices and get multiple quotes/diagnostic strategies; who knows, work orders alone might help you determine what you’re dealing with. Always stay on top of general vehicle maintenance.
What Are Some of the Symptoms of the Code?

Symptoms of a P0579 fault code may include:

    Abnormal vehicle speeds with cruise control activated
    Inoperative cruise control
    Cruise control indicator light is on regardless of switch position
    Unable to set cruise control to the desired speed

What Are Some Common Causes of the Code?

Causes

of this P0579 code may include:

    Faulty multifunction/cruise control switch (i.e., stuck, broken, missing, etc.)
    Wiring issue (e.g., rubbing on steering column/dashboard parts, water intrusion, corrosion, etc.)
    Connector malfunction (e.g., corroded pins, broken plastic tabs, swollen connector body, etc.)
    Liquids/dirt/grime in the cruise control button/switch causing abnormal mechanical operation
    ECM problem (e.g., water intrusion into the computer body, internal short circuit, internal overheating, etc.)

What Are the Troubleshooting Steps for P0579?
Basic Step #1

Once your vehicle’s multifunction/cruise control switch is located, visually inspect it for any type of contamination. It is very easy for plastic buttons/switches to become dirty/greasy/sticky, making them faulty and/or operating abnormally. Ensure the mechanical operation of the switch is smooth and fluid. Any issues here should be addressed immediately. If your specific scan tool/OBD reader has the capabilities, feel free to observe the electronic operation of the switch via DATA STREAM (the mode name varies here between readers, but the important thing is to find a mode to observe real-time data).

TIP: Be careful not to spray cleaning solutions directly onto the button. Lightly dampen a clean cloth with water, soap and water, dashboard cleaner, etc., and carefully remove debris from the switch’s crevices. A compressed air gun will help remove debris without making the situation worse.
Basic Step #2

To access the connectors and harnesses involved in the cruise control/multifunction switch input circuit, you may need to remove some dashboard plastics/covers. Be gentle when working with plastic. Comfortable ambient temperatures always contribute to the ease of disassembling/assembling dashboard/interior plastics.

If you can easily access the connector, you might be able to apply specific troubleshooting steps provided by your Al. Testing the switches will most likely involve recording electrical values using your multimeter. This may include using the switch during recording and/or static tests. Refer to the specific make and model service manual for the “diagnostic diagram.”
Basic Step #3

A problem within the ECM is, most of the time, the last resort in diagnosis. Since this might be one of the most expensive electronic repairs you could perform on your vehicle, leave this to the professionals.

P057A, P057B, P057C, P057D, P057E, P057F ISO/SAE Reserved

P00C0 – P00FF ISO/SAE Reserved

P0580 Low Cruise Control Multifunction Input A Circuit

What does it mean?

This is a generic powertrain diagnostic trouble code (DTC) and generally applies to OBD-II vehicles. This may include, but is not limited to, vehicles from Mazda, Alfa Romeo, Ford, Land Rover, Jeep, Dodge, Chrysler, Chevy, Nissan, etc. Although generic, the exact repair steps may vary depending on the year, make, model, and powertrain configuration.

Cruise control was developed for our comfort. Its sole purpose is to manually maintain the vehicle speed set by the operator (via steering wheel buttons, the multifunction switch (i.e., turn signals, cruise control, wipers, etc.) mounted on the steering column, etc.).

Meanwhile, the operator no longer needs to control the accelerator pedal, and if the vehicle is equipped with an automatic transmission (A/T), it can also control and adjust shift points based on real-time driving condition requirements.

Generally speaking here, this code would lead me to believe we are talking about the multifunction switch on your steering column. That said, the possibilities for location vary significantly from one manufacturer to another, so research accordingly. The cruise control button would be a good place to start narrowing down locations. This code refers to a specific input circuit in the cruise control system. To determine which wire/circuit to focus on, refer to the service manual; the letters in the codes can and will be your best reference regarding the identification of the wire/circuit you are trying to diagnose/test.

In case of a fault in the cruise control multifunction input circuit “A,” the Engine Control Module (ECM) proactively illuminates the instrument cluster with P0580 and related codes (P0564, P0578, P0579, P0580, and P0581).

Regarding the letter “A,” it could be to distinguish a connector, wire, circuit group, etc. That said, manufacturer specifications are the best resource you can have for this.

The P0580 code is set by the ECM when the electrical value of the cruise control multifunction input circuit “A” is unexpected.

A cruise control stalk:


P0580 Cruise Control Stalk
How severe is this DTC?

Low severity for almost all cruise control faults, that said, there are many exceptions. For the most part, however, this fault should not be a source of serious concern. That said, when it comes to electrical issues, they generally worsen over time. Most of the time, this fault will be moderately affordable to fix.

Obviously, this is very subjective, so be sure to shop around for the best prices and get multiple quotes/diagnostic strategies; who knows, work orders alone can help you determine what you’re dealing with. Always stay on top of general vehicle maintenance.
What are some of the symptoms of the code?

Symptoms of a P0580 fault code may include:

  • Abnormal vehicle speeds with cruise control activated
  • Inoperative cruise control
  • Cruise control indicator light on regardless of switch position
  • Unable to set cruise control to the desired speed

What are some common causes of the code?

Causes of this P0580 code may include:

Faulty multifunction/cruise control switch (i.e., stuck, broken, missing, etc.)
Wiring issue (e.g., rubbing on steering column/dashboard parts, water intrusion, corrosion, etc.)
Connector malfunction (e.g., corroded pins, broken plastic tabs, swollen connector body, etc.)
Liquids/dirt/grime in the cruise control button/switch causing abnormal mechanical operation
ECM issue (e.g., water intrusion into the computer body, internal short circuit, internal overheating, etc.)

What are the troubleshooting steps for P0580?
Basic Step #1

Once your vehicle’s multifunction/cruise control switch is located, visually inspect it for any type of contamination. It is very easy for plastic buttons/switches to become dirty/greasy/sticky, making them faulty and/or operating abnormally. Ensure the mechanical operation of the switch is smooth and fluid. Any issues here should be addressed immediately. If your particular scan tool/OBD reader has the capabilities, feel free to observe the electronic operation of the switch via DATA STREAM (the mode name varies here between readers, but the important thing is to find a mode to observe real-time data).

TIP: Be careful not to spray cleaning solutions directly onto the button. Lightly dampen a clean cloth with water, soap and water, dashboard cleaner, etc., and carefully remove debris from the switch crevices. A compressed air gun will help remove debris without making the situation worse.
Basic Step #2

To access the connectors and harnesses involved in the cruise control/multifunction switch input circuit, you may need to remove some dashboard plastics/covers. Be gentle when working with plastic. Comfortable ambient temperatures always contribute to the ease of disassembly/assembly of the dashboard/interior plastics.

If you can easily access the connector, you may be able to apply specific troubleshooting steps provided by your service manual. Switch testing will most likely involve recording electrical values using your multimeter. This may include using the switch during recording and/or static tests. Refer to the specific make and model service manual for the “diagnostic diagram.”
Basic Step #3

An issue within the ECM is, most of the time, the last resort in diagnosis. Since this may be one of the most expensive electronic repairs you could perform on your vehicle, leave this to the professionals.

P0581 High Speed Cruise Control Multifunction Input A Circuit

What Does It Mean?

This is a generic powertrain diagnostic trouble code (DTC) and generally applies to OBD-II vehicles. This may include, but is not limited to, vehicles from Mazda, Alfa Romeo, Ford, Land Rover, Jeep, Dodge, Chrysler, Chevy, Nissan, etc. Although generic, the exact repair steps may vary depending on the year, make, model, and powertrain configuration.

Cruise control was developed for our comfort. Its sole purpose is to manually maintain the vehicle speed set by the operator (via steering wheel buttons, the multifunction switch (i.e., turn signals, cruise control, wipers, etc.) mounted on the steering column, etc.)
Meanwhile, the operator no longer needs to control the accelerator pedal, and if the vehicle is equipped with an automatic transmission (A/T), it can also control and adjust shift points based on real-time driving condition requirements.

Generally speaking here, this code would lead me to believe we are talking about the multifunction switch on your steering column. That said, location possibilities vary significantly from one manufacturer to another, so research accordingly. The cruise control button would be a good place to start narrowing down locations. This code refers to a specific input circuit in the cruise control system. To determine which wire/circuit to focus on, refer to the service manual; the letters in the codes can and will be your best reference regarding identifying the wire/circuit you are trying to diagnose/test.

In case of a fault in the cruise control multifunction input circuit “A”, the Engine Control Module (ECM) proactively illuminates the instrument cluster with P0581 and related codes (P0564, P0578, P0579, P0580, and P0581).

Regarding the letter “A”, it could be to distinguish a connector, wire, circuit group, etc. That said, manufacturer specifications are the best resource you can have for this.

The P0581 code is set by the ECM when there is a high electrical value detected in the cruise control multifunction input circuit “A”.

A cruise control stalk:


P0581 Cruise Control Stalk
How Severe Is This DTC?

Low severity for almost all cruise control faults, that said, there are many exceptions. For the most part, however, this fault should not be a source of serious concern. That said, regarding electrical issues, they generally worsen over time. Most of the time, this fault will be moderately affordable to fix.

Obviously, this is very subjective, so be sure to shop around for the best prices and get multiple quotes/diagnostic strategies; who knows, work orders alone might help you determine what you’re dealing with. Always stay on top of general vehicle maintenance.
What are some of the symptoms of the code?

Symptoms of a P0581 trouble code may include:

Abnormal vehicle speeds with cruise control activated
Inoperative cruise control
Cruise control indicator light is on regardless of switch position
Unable to set cruise control to the desired speed

What are some of the common causes of the code?

Causes

of this P0581 code may include:

Faulty multifunction/cruise control switch (i.e., stuck, broken, missing, etc.)
Wiring issue (e.g., rubbing on steering column/dashboard parts, water intrusion, corrosion, etc.)
Connector malfunction (e.g., corroded pins, broken plastic tabs, swollen connector body, etc.)
Liquids/dirt/grime in the cruise control button/switch causing abnormal mechanical operation
ECM problem (e.g., water intrusion into the computer body, internal short circuit, internal overheating, etc.)

What are the troubleshooting steps for P0581?

Basic Step #1

Once your vehicle’s multifunction/cruise control switch is located, visually inspect it for any type of contamination. It is very easy for plastic buttons/switches to become dirty/greasy/sticky, making them faulty and/or operating abnormally. Ensure the mechanical operation of the switch is smooth and fluid. Any issues here should be addressed immediately. If your specific scan tool/OBD reader has the capabilities, feel free to observe the electronic operation of the switch via DATA STREAM (the mode name varies here between readers, but the important thing is to find a mode to observe real-time data).

TIP: Be careful not to spray cleaning solutions directly onto the button. Lightly dampen a clean cloth with water, soap and water, dashboard cleaner, etc., and carefully remove debris from the switch’s crevices. A compressed air gun will help remove debris without making the situation worse.
Basic Step #2

To access the connectors and harnesses involved in the cruise control/multifunction switch input circuit, you may need to remove some dashboard plastics/covers. Be gentle when working with plastic. Comfortable ambient temperatures always contribute to the ease of disassembling/assembling dashboard/interior plastics.

If you can easily access the connector, you might be able to apply specific troubleshooting steps provided by your service manual. Switch tests will most likely involve recording electrical values using your multimeter. This may include using the switch during recording and/or static tests. Refer to the specific make and model service manual for the “diagnostic diagram.”
Basic Step #3

A problem within the ECM is, most of the time, the last resort in diagnosis. Since this might be one of the most expensive electronic repairs you could perform on your vehicle, leave this to the professionals.

P0582 Cruise Control Vacuum Control Circuit / Open

What Does It Mean?

This is a generic powertrain diagnostic trouble code (DTC) and generally applies to OBD-II vehicles. Vehicle makes may include, but are not limited to, Dodge, Chrysler, Jeep, Chevy, Hyundai, Ram, Ford, etc.

There are many possible ways for your vehicle to control your cruise control. One avenue manufacturers tend to use for controlling cruise control is a vacuum-operated and actuated system.

Most of the time, they use vacuum as an effective means to control a cruise control servo or a similar diaphragm-type actuator. The vacuum control circuit is integral to the proper functioning of this system. The ECM (Engine Control Module) monitors/adjusts the vacuum control side accordingly, based on the operator’s cruise control demands. If the ECM loses its monitoring capabilities over the cruise control vacuum control circuit, it is highly likely that your cruise control will stop functioning as it should. Often, these systems will include a vacuum solenoid, which is responsible for controlling the vacuum flow to the control side of the system (i.e., it controls the vehicle speed when cruise is active); that said, in other systems, the vacuum responsibilities are consolidated solely to the cruise control servo. As with many faults, this could be strictly an electrical issue caused by a mechanical problem, vice versa, or both.

While monitoring the sensors, circuits, switches, etc., of your cruise control, not to mention all the other systems in your vehicle, the ECM detected a fault in the cruise control vacuum control circuit. Most likely, one or more of the monitored electrical values are out of range (i.e., beyond the manufacturer’s desired values).

For P0582, it could be a general fault in the circuit or a loss of continuity in the cruise control vacuum electrical circuit.
How Severe Is This DTC?

To be honest, this fault should not be very concerning from a safety perspective. That said, the severity is set to low to medium. Any issue in a vacuum system, which is often supplied/recycled by the engine, should be resolved sooner rather than later, given some of the possible consequences of neglecting to repair a vacuum system.

I would say that if you have specifically determined that the engine is not affected by this fault, typically in vacuum systems not powered by the intake, and you can live without cruise control, you should be able to postpone this fault if your budget is limited or other things have a higher priority.
What Are Some of the Symptoms of the Code?

Symptoms of a P0582 diagnostic trouble code may include:

Inoperative cruise control
CEL (Check Engine Light) illuminated
Certain functions not working as they should (e.g., set, resume, accelerate, etc.)
Irregular vehicle speed, even with cruise control set to a specific speed
Cruise control light constantly illuminated in the instrument cluster
One or more cruise control functions not operating correctly
Hissing sounds from the engine compartment

What Are Some of the Common Causes of the Code?

Causes

of this P0582 cruise control code may include:

Faulty vacuum solenoid
Faulty cruise control servo
Broken/cracked/disconnected/pinched vacuum lines
Mechanical obstruction in the cruise control servo’s operating range
Wiring issue (e.g., short, open, corrosion, resistance, chafing, etc.)
ECM (Engine Control Module) problem
Mechanical obstruction in vacuum passages
Seized cruise control servo cable
Engine vacuum system leak
Connector issue (e.g., broken tabs, corroded pins, melted housings, missing insulation, etc.)

What Are the Diagnostic and Troubleshooting Steps for P0582?

The first step in the troubleshooting process for any malfunction is to search Technical Service Bulletins (TSBs) for known issues with the specific vehicle.

Advanced diagnostic steps become very vehicle-specific and may require the appropriate advanced equipment and knowledge to perform accurately. We include the basic steps below but refer to a repair guide specific to the year/make/model/powertrain for steps specific to your vehicle.
Basic Step #1

First things first, open the hood to inspect things in your cruise control system. You’ll want to trace the vacuum control line to see where it goes and what it controls. If it goes directly to a vacuum solenoid, carefully inspect the vacuum hoses, solenoids, and cruise control servo for physical damage. Anything obvious should be repaired/replaced before proceeding with diagnosis.

NOTE: When inspecting the cruise control servo, also check that the cable is not seized, as this can cause the monitored electrical value to be exceeded.
Basic Step #2

If a cruise control vacuum solenoid is present, it would be wise to check its electrical values to rule out the possibility of an internal fault. Refer to your vehicle’s service manual for precise values and procedures. I have seen them mounted on the firewall, fender wells, intake manifolds, etc., so make sure you are working with the correct solenoid before doing anything. If the recorded values are outside the manufacturer’s desired values, replace the solenoid, clear the engine light, and test the system.
Basic Step #3

If you have used a vacuum gauge at one point or another, it would be a good idea to monitor the vacuum in the system. It is extremely important to acquire vacuum from specific orifices of the intake systems. Generally speaking, they will be located on the intake manifold itself, but refer to your manual for details. This depends heavily on your engine’s specifics, but normally, at operating temperature, with correct ignition timing, the vacuum reading should be around 50 to 55 kPa.

P0583 Low Speed Cruise Control Vacuum Control Circuit

What Does It Mean?

This is a generic powertrain diagnostic trouble code (DTC) and generally applies to OBD-II vehicles. Vehicle makes may include but are not limited to Dodge, Chrysler, Jeep, Chevy, Hyundai, Ram, Ford, etc.

There are many possible ways for your vehicle to control your cruise control. One avenue that manufacturers tend to use for controlling cruise control is a vacuum-operated and actuated system.

Most of the time, they use vacuum as an effective means to control a cruise control servo or a similar diaphragm-type actuator. The vacuum control circuit is an integral part of the proper functioning of this system. The ECM (Engine Control Module) monitors/adjusts the vacuum control side accordingly, based on the operator’s cruise control demands. If the ECM loses its monitoring capabilities to the cruise control vacuum control circuit, it is very likely that your cruise control will stop functioning as it should. Often, these systems will include a vacuum solenoid, which is responsible for controlling the vacuum flow to the control side of the system (i.e., it controls the vehicle speed when cruise is active); that said, in other systems, the vacuum responsibilities are consolidated solely to the cruise control servo. As with many faults, this could be strictly an electrical issue caused by a mechanical problem, vice versa, or both.

While monitoring the sensors, circuits, switches, etc., of your cruise control, not to mention all the other systems in your vehicle, the ECM detected a fault in the cruise control vacuum control circuit. Most likely, one or more of the monitored electrical values are out of range (i.e., beyond the manufacturer’s desired values).

For P0583, it indicates a low voltage situation within the cruise control vacuum electrical circuit.
How Severe Is This DTC?

To be honest, this fault should not be very concerning from a safety standpoint. That said, the severity is set to low to medium. Any issue in a vacuum system, which is often supplied/recycled by the engine, should be resolved sooner rather than later, given some of the possible consequences of neglecting to repair a vacuum system.

I would say that if you have specifically determined that the engine is not affected by this fault, typically in vacuum systems not powered by the intake, and you can live without cruise control, you should be able to postpone this fault if your budget is limited or other things have a higher priority.
What Are Some of the Symptoms of the Code?

Symptoms of a P0583 diagnostic trouble code may include:

Inoperative cruise control
CEL (Check Engine Light) illuminated
Certain functions not working as they should (e.g., set, resume, accelerate, etc.)
Erratic vehicle speed, even with cruise set to a specific speed
Cruise control light constantly illuminated in the instrument cluster
One or more cruise control functions not operating correctly
Hissing sounds from the engine compartment

What Are Some of the Common Causes of the Code?

Causes

of this P0583 cruise control code may include:

Faulty vacuum solenoid
Faulty cruise control servo
Broken/cracked/disconnected/pinched vacuum lines
Mechanical obstruction in the cruise control servo’s operating range
Wiring issue (e.g., short, open, corrosion, resistance, chafing, etc.)
ECM (Engine Control Module) problem
Mechanical obstruction in vacuum passages
Seized cruise control servo cable
Engine vacuum system leak
Connector issue (e.g., broken tabs, corroded pins, melted housings, missing insulation, etc.)

What Are the Diagnostic and Troubleshooting Steps for P0583?

The first step in the troubleshooting process for any malfunction is to search Technical Service Bulletins (TSBs) for known issues with the specific vehicle.

Advanced diagnostic steps become very vehicle-specific and may require the appropriate advanced equipment and knowledge to perform accurately. We include the basic steps below but refer to a repair guide specific to the year/make/model/powertrain for steps specific to your vehicle.
Basic Step #1

First things first, open the hood to check things in your cruise control system. You’ll want to trace the vacuum control line to see where it goes and what it controls. If it goes directly to a vacuum solenoid, carefully inspect the vacuum lines, solenoids, and cruise control servo for physical damage. Anything obvious should be repaired/replaced before proceeding with diagnosis.

NOTE: When inspecting the cruise control servo, also check that the cable is not seized, as this can cause the monitored electrical value to be exceeded.
Basic Step #2

If a cruise control vacuum solenoid is present, it would be wise to check its electrical values to rule out the possibility of an internal fault. Refer to your vehicle’s service manual for precise values and procedures. I have seen them mounted on the firewall, fender wells, intake manifolds, etc., so make sure you are working with the correct solenoid before doing anything. If the recorded values are outside the manufacturer’s desired values, replace the solenoid, clear the engine light, and test the system.
Basic Step #3

If you have used a vacuum gauge at one point or another, it would be a good idea to monitor the vacuum in the system. It is extremely important to acquire vacuum from specific orifices of the intake systems. Generally speaking, they will be located on the intake manifold itself, but refer to your manual for details. This depends heavily on your engine’s specifics, but normally, at operating temperature, with correct ignition timing, the vacuum reading should be around 50 to 55 kPa.

P0584 High Speed Cruise Control Vacuum Control Circuit

What Does It Mean?

This is a generic diagnostic trouble code (DTC) for the powertrain and generally applies to OBD-II vehicles. Vehicle makes may include, but are not limited to, Dodge, Chrysler, Jeep, Chevy, Hyundai, Ram, Ford, etc.

There are many possible ways for your vehicle to control your cruise control. One method manufacturers tend to use for controlling cruise control is a vacuum-controlled and actuated system.

Most of the time, they use vacuum as an effective means to control a cruise control servo or a similar diaphragm-type control. The vacuum control circuit is an integral part of the proper functioning of this system. The ECM (Engine Control Module) monitors/adjusts the control side of the vacuum accordingly, based on the operator’s cruise control demands. If the ECM loses its monitoring capabilities for the cruise control vacuum control circuit, it is very likely that your cruise control will stop functioning as it should. Often, these systems will include a vacuum solenoid, which is responsible for controlling the vacuum flow to the control side of the system (i.e., it controls the vehicle’s speed when cruise control is active); that said, in other systems, the vacuum responsibilities are consolidated solely within the cruise control servo. As with many faults, this could be strictly an electrical issue caused by a mechanical problem, vice versa, or both.

While monitoring the sensors, circuits, switches, etc., of your cruise control, not to mention all the other systems in your vehicle, the ECM has detected a fault in the cruise control vacuum control circuit. Most likely, one or more of the monitored electrical values are out of range (i.e., beyond the manufacturer’s desired values).

For P0584, it indicates a high voltage situation within the cruise control electrical vacuum circuit.
How Severe Is This DTC?

To be honest, this fault should not be very concerning from a safety perspective. That said, the severity is set to low to medium. Any issue in a vacuum system, which is often supplied/recycled by the engine, should be resolved sooner rather than later, given some of the possible consequences of neglecting to repair a vacuum system.

I would say that if you have specifically determined that the engine is not affected by this fault, typically in vacuum systems not powered by the intake, and you can live without cruise control, you should be able to postpone addressing this fault if your budget is limited or other things have a higher priority.
What Are Some of the Symptoms of the Code?

Symptoms of a P0584 diagnostic trouble code may include:

Inoperative cruise control
CEL (Check Engine Light) illuminated
Certain functions not working as they should (e.g., set, resume, accelerate, etc.)
Irregular vehicle speed, even with cruise control set to a specific speed
Cruise control light constantly illuminated in the instrument cluster
One or more cruise control functions not operating correctly
Hissing sounds from the engine compartment

What Are Some of the Common Causes of the Code?

Causes

of this P0584 cruise control code may include:

Faulty vacuum solenoid
Faulty cruise control servo
Broken/cracked/disconnected/pinched vacuum lines
Mechanical obstruction in the cruise control servo’s operating range
Wiring issue (e.g., short, open, corrosion, resistance, chafing, etc.)
ECM (Engine Control Module) problem
Mechanical obstruction in the vacuum passages
Seized cruise control servo cable
Engine vacuum system leak
Connector issue (e.g., broken tabs, corroded pins, melted housings, missing insulation, etc.)

What Are the Diagnostic and Troubleshooting Steps for P0584?

The first step in the troubleshooting process for any malfunction is to check the Technical Service Bulletins (TSBs) for known issues with the specific vehicle.

Advanced diagnostic steps become very vehicle-specific and may require the appropriate advanced equipment and knowledge to perform accurately. We include the basic steps below but refer to a repair guide specific to the year/make/model/powertrain for steps tailored to your vehicle.
Basic Step #1

First things first, open the hood to inspect components in your cruise control system. You’ll want to trace the vacuum control line to see where it goes and what it controls. If it goes directly to a vacuum solenoid, carefully inspect the vacuum lines, solenoids, and cruise control servo for physical damage. Anything obvious should be repaired/replaced before continuing diagnostics.

NOTE: When inspecting the cruise control servo, also check that the cable is not seized, as this can cause the monitored electrical value to be exceeded.
Basic Step #2

If a cruise control vacuum solenoid is present, it would be wise to check its electrical values to rule out the possibility of an internal fault. Refer to your vehicle’s service manual for precise values and procedures. I’ve seen them mounted on the firewall, fender wells, intake manifolds, etc., so make sure you are working with the correct solenoid before doing anything. If the recorded values are outside the manufacturer’s desired range, replace the solenoid, clear the engine light, and test the system.
Basic Step #3

If you have used a vacuum gauge at some point, it would be a good idea to monitor the vacuum in the system. It is extremely important to acquire vacuum from specific orifices in the intake systems. Generally, they will be located on the intake manifold itself, but refer to your manual for details. This depends heavily on your engine’s specifics, but normally, at operating temperature with correct ignition timing, the vacuum reading should be around 50 to 55 kPa.