P076A Shift Solenoid H Malfunction

What Does It Mean?

This is a generic diagnostic trouble code (DTC) and generally applies to OBD-II equipped vehicles with an automatic transmission.

This can include, but is not limited to, vehicles from Chrysler, Ford, Dodge, Hyundai, Kia, Ram, Lexus, Toyota, Mazda, Honda, VW, etc. Although generic, the exact repair steps may vary depending on the year, make, model, and powertrain configuration.

Most automatic transmissions incorporate a number of shift solenoids, depending on the number of gears inside. The related fault codes for the “H” shift solenoid are codes P076A, P076B, P076C, P076D, and P076E, depending on the specific malfunction that alerts the PCM to set the code and illuminate the Check Engine light. If you have an Overdrive light or other transmission warning light, it may also be illuminated.

The purpose of the shift solenoid circuit is for the PCM to monitor the shift solenoids to manage the movement of fluid between different hydraulic circuits and change the gear ratio at the appropriate time. This process maximizes engine performance at the lowest possible RPM.

The automatic transmission relies on bands and clutches to shift gears, and this is accomplished by having fluid pressure in the right place at the right time. The transmission solenoids are responsible for opening or closing valves in the valve body to allow transmission fluid to flow to the clutches and bands, enabling smooth transmission shifts as the engine accelerates.

When the Powertrain Control Module (PCM) detects a malfunction in the “H” shift solenoid circuit, a variety of codes can be triggered depending on the specific vehicle, transmission, and the number of gears in the specific automatic transmission. In this case, the OBD-II fault code P076A is associated with a general malfunction in the “H” transmission shift solenoid circuit.

How Severe Is This DTC?

The severity of this code normally starts as moderate but can escalate to a more severe level quickly if not corrected in a timely manner.
What Are Some of the Symptoms of the Code?

Symptoms of a P076A fault code may include:

Transmission slipping
Transmission overheating
Transmission shifting harshly
Reduced fuel economy

Symptoms

potentially missed shifts
Vehicle enters limp mode
Check Engine light illuminated

What Are Some of the Common Causes of the Code?

Causes

of this P076A transmission code may include:

Low fluid level
Dirty or contaminated fluid
Dirty or clogged transmission filter
Faulty transmission valve body
Restricted hydraulic passages
Transmission has an internal failure
Faulty shift solenoid
Corroded or damaged connector
Faulty or damaged wiring
Faulty PCM

What Are the Troubleshooting Steps for P076A?

Before starting the troubleshooting process for any malfunction, you should research the Technical Service Bulletins (TSBs) for the specific vehicle by year, model, and transmission. In some circumstances, this can save a lot of time in the long run by pointing you in the right direction. You should also check the vehicle’s records to verify the last time the filter and fluid were changed, if possible.
Fluid and Wiring Inspections

The first step is to ensure the fluid level is correct and to inspect the condition of the fluid for any contamination. Next, a thorough visual inspection should be performed to check the associated wiring for obvious defects such as scraping, rubbing, bare wires, or burn spots.

Then, check the connectors and connections for security, corrosion, and damaged pins. This process should include all wiring and connectors for the transmission solenoids, transmission pump, and PCM. Based on the configuration, the transmission grounding should be inspected for security and grounding issues.
Advanced Steps

Advanced steps become very vehicle-specific and require appropriate advanced equipment to perform accurately. These procedures require a digital multimeter and the vehicle-specific technical references. Voltage requirements will be highly dependent on the specific year and model of the vehicle. You must follow the troubleshooting chart specific to your vehicle.
Continuity Checks

Continuity checks should always be performed with the power disconnected from the circuit, and normal readings for wiring and connections should be 0 ohms of resistance, unless otherwise indicated by the technical data. Resistance or lack of continuity is an indication of faulty wiring that is open or shorted and must be repaired or replaced.
What Are the Common Repairs for This Code?

Replacing the fluid and filter
Repairing or replacing a faulty shift solenoid
Repairing or replacing the faulty transmission valve body
Repairing or replacing the faulty transmission
Flushing the transmission to clean the passages
Cleaning corrosion from connectors
Repairing or replacing wiring
Programming or replacing the PCM

I hope the information in this article has been helpful in guiding you in the right direction to correct the issue with your shift solenoid circuit error code. This article is strictly informational, and the technical data and service bulletins specific to your vehicle should always take priority.

P076B Shift Solenoid H Performance / Stuck

What Does It Mean?

This is a generic diagnostic trouble code (DTC) and generally applies to OBD-II equipped vehicles with an automatic transmission.

This may include, but is not limited to, vehicles from Chrysler, Ford, Dodge, Hyundai, Kia, Ram, Lexus, Toyota, Mazda, Honda, VW, etc. Although generic, the exact repair steps may vary depending on the year, make, model, and powertrain configuration.

Most automatic transmissions incorporate a number of shift solenoids, depending on the number of gears inside. The related fault codes for the “H” shift solenoid are P076A, P076B, P076C, P076D, and P076E, depending on the specific malfunction that alerts the PCM to set the code and illuminate the Check Engine light. If you have an Overdrive light or other transmission warning light, it may also be illuminated.

The purpose of the shift solenoid circuit is for the PCM to monitor the shift solenoids to manage the movement of fluid between the different hydraulic circuits and change the gear ratio at the appropriate time. This process maximizes engine performance at the lowest possible RPM.

The automatic transmission relies on bands and clutches to shift gears, and this is accomplished by having fluid pressure in the right place at the right time. The transmission solenoids are responsible for opening or closing valves in the valve body to allow transmission fluid to flow to the clutches and bands to move the transmission smoothly as the engine accelerates.

When the Powertrain Control Module (PCM) detects a malfunction in the “H” shift solenoid circuit, a variety of codes can be triggered depending on the specific vehicle, transmission, and the number of gears incorporated in the specific automatic transmission. In this case, the OBD-II fault code P076B is associated with a detected performance problem or a stuck situation in the “H” transmission shift solenoid circuit.

How Severe Is This DTC?

The severity of this code normally starts as moderate, but it can escalate to a more severe level quickly if not corrected in a timely manner.
What Are Some of the Symptoms of the Code?

Symptoms of a P076B fault code may include:

Transmission slipping
Transmission overheating
Transmission shifting harshly
Reduced fuel economy

Symptoms

potentially missed shifts
Vehicle enters limp mode
Check Engine light illuminated

What Are Some of the Common Causes of the Code?

Causes

of this P076B transmission code may include:

Insufficient fluid level
Dirty or contaminated fluid
Dirty or clogged transmission filter
Faulty transmission valve body
Restricted hydraulic passages
Transmission has an internal failure
Faulty shift solenoid
Corroded or damaged connector
Faulty or damaged wiring
Faulty PCM

What Are the Troubleshooting Steps for P076B?

Before starting the troubleshooting process for any malfunction, you should research the Technical Service Bulletins (TSBs) for the specific vehicle by year, model, and transmission. In some circumstances, this can save you a lot of time in the long run by pointing you in the right direction. You should also check the vehicle’s records to verify the last time the filter and fluid were changed if possible.
Fluid and Wiring Inspections

The first step is to ensure the fluid level is correct and to inspect the condition of the fluid for any contamination. Next, a thorough visual inspection to check the associated wiring for obvious defects such as scraping, rubbing, bare wires, or burn spots should be performed.

Then, check the connectors and connections for security, corrosion, and damaged pins. This process should include all wiring and connectors for the transmission solenoids, transmission pump, and PCM. Based on the configuration, the transmission bonding should be inspected for security and bonding issues.
Advanced Steps

Replacing the fluid and filter
Repairing or replacing a faulty shift solenoid
Repairing or replacing the faulty transmission valve body
Repairing or replacing the faulty transmission
Flushing the transmission to clean the passages
Cleaning connector corrosion
Repairing or replacing wiring
Reprogramming or replacing the PCM

P076C Shift Solenoid H Stuck

What does it mean?

This is a generic diagnostic trouble code (DTC) and generally applies to OBD-II equipped vehicles with an automatic transmission.

The automatic transmission relies on bands and clutches to shift gears, and this is accomplished by having fluid pressure in the right place at the right time. The transmission solenoids are responsible for opening or closing valves in the valve body to allow transmission fluid to flow to the clutches and bands to move the transmission smoothly as the engine accelerates.

When the Powertrain Control Module (PCM) detects a malfunction in the “H” shift solenoid circuit, a variety of codes can be triggered depending on the specific vehicle, transmission, and the number of gears incorporated in the specific automatic transmission. In this case, the OBD-II fault code P076C is associated with a detected stuck “H” transmission shift solenoid.

How severe is this DTC?

The severity of this code normally starts as moderate, but it can progress to a more severe level quickly when not corrected in a timely manner.
What are some of the symptoms of the code?

Symptoms of a P076C fault code may include:

Transmission slipping
Transmission overheating
Transmission shifting harshly
Reduced fuel economy

Symptoms

potentially missed shifts
Vehicle enters limp mode
Check Engine light illuminated

What are some of the common causes of the code?

Causes

of this P076C transmission code may include:

What are the troubleshooting steps for P076C?

Before starting the troubleshooting process for any malfunction, you should research the Technical Service Bulletins (TSBs) for the specific vehicle by year, model, and transmission. In some circumstances, this can save you a lot of time in the long run by pointing you in the right direction. You should also check the vehicle’s records to verify the last time the filter and fluid were changed if possible.
Fluid and Wiring Inspections

Next, check the connectors and connections for security, corrosion, and damaged pins. This process should include all wiring and connectors for the transmission solenoids, transmission pump, and PCM. Based on the configuration, the transmission bonding should be inspected for security and bonding issues.
Advanced Steps

Advanced steps become very vehicle-specific and require appropriate advanced equipment to perform accurately. These procedures require a digital multimeter and the vehicle-specific technical references. Voltage requirements will be highly based on the specific year and model of the vehicle. You must follow the troubleshooting chart specific to your vehicle.
Continuity Checks

Replacing fluid and filter
Repairing or replacing a faulty shift solenoid
Repairing or replacing the faulty transmission valve body
Repairing or replacing the faulty transmission
Flushing the transmission to clean passages
Cleaning corrosion from connectors
Repairing or replacing wiring
Flashing or replacing PCM

I hope the information in this article has been helpful in pointing you in the right direction to correct the issue with your shift solenoid circuit error code. This article is strictly informational, and the technical data and service bulletins specific to your vehicle should always take priority.

Scion P1441 Code: EVAP System Switching Valve Control Circuit

Understanding the Scion P1441 OBD2 Trouble Code

When your Scion’s check engine light illuminates and you retrieve the diagnostic trouble code P1441, you’re dealing with a specific issue within the vehicle’s Evaporative Emission Control (EVAP) system. This code indicates a malfunction in the Vent Control Valve circuit, specifically related to the Vacuum Switching Valve (VSV) that controls the flow of fuel vapors from the charcoal canister. The EVAP system is crucial for preventing fuel vapors from escaping into the atmosphere, making this code both an emissions and potential performance concern that requires proper diagnosis and repair.

What Does the P1441 Code Mean on Scion Vehicles?

The P1441 code specifically points to a problem in the control circuit for the EVAP system’s vent control valve or vacuum switching valve. This valve is responsible for managing the flow of fuel vapors between the charcoal canister and the intake manifold. When the Engine Control Module (ECM) detects an irregular voltage, resistance, or operational pattern in this circuit that falls outside predetermined parameters, it stores the P1441 code and illuminates the check engine light. This is not a generic code but rather a manufacturer-specific code for Toyota/Scion vehicles, making accurate diagnosis essential for proper resolution.

How the Scion EVAP System Operates

The EVAP system in your Scion is designed to capture and store fuel vapors from the fuel tank, preventing them from escaping into the atmosphere. The system consists of several key components:

Charcoal canister for vapor storage
Vent control valve (VSV) for atmosphere venting
Purge valve for vapor flow to engine
Fuel tank pressure sensor for system monitoring
Network of hoses and solenoids

During normal operation, the ECM strategically opens and closes these valves to either trap vapors or direct them to the engine for combustion, maintaining optimal environmental compliance and engine performance.

Common Symptoms and Causes of P1441 in Scion Models

Recognizing the symptoms associated with the P1441 code is the first step in diagnosis. While sometimes the check engine light may be the only noticeable symptom, several other indicators can help confirm the issue and guide your troubleshooting process.

Primary Symptoms of P1441 Code

Drivers of Scion vehicles experiencing the P1441 code may notice several telltale signs that indicate an issue with the EVAP system’s vent control circuit:

Illuminated check engine light (MIL)
Possible failed emissions test
Fuel odor around the vehicle
Decreased fuel efficiency in some cases
Rough idle or occasional engine performance issues
Difficulty refueling (clicking off fuel nozzle prematurely)

Most Frequent Causes of P1441 Code

The P1441 code can be triggered by various issues within the EVAP control circuit. Understanding these potential causes will streamline your diagnostic process:

Faulty vent control valve or vacuum switching valve
Damaged wiring or connectors in the control circuit
Blown fuse affecting the EVAP system
Poor electrical connections at the valve or ECM
Failed charcoal canister (less common)
Issues with the Engine Control Module itself
Corroded terminals or damaged wiring harness

Professional Diagnostic Procedure for Scion P1441

Proper diagnosis of the P1441 code requires a systematic approach using appropriate tools and following manufacturer-recommended procedures. This section outlines the professional diagnostic steps that technicians use to accurately identify the root cause of the P1441 code in Scion vehicles.

Required Tools and Safety Precautions

Before beginning diagnosis, ensure you have the proper equipment and observe necessary safety measures:

Digital multimeter for electrical testing
Scan tool capable of reading manufacturer-specific codes
Vehicle service manual for wiring diagrams
Safety glasses and gloves
Fire extinguisher (when working near fuel system)
Properly ventilated workspace
Jack and jack stands if underside access is required

Step-by-Step Diagnostic Process

Follow this systematic approach to diagnose the P1441 code accurately:

Step 1: Confirm the code with an OBD2 scanner and check for additional codes
Step 2: Perform visual inspection of EVAP system components and wiring
Step 3: Check the vent control valve resistance (typically 20-30 ohms at 68°F)
Step 4: Test valve operation with applied voltage (should click audibly)
Step 5: Inspect wiring harness for damage, corrosion, or loose connections
Step 6: Check circuit voltage and ground signals with multimeter
Step 7: Verify proper fuse condition in relevant circuits
Step 8: Test ECM output signals using appropriate diagnostic procedures

Repair Solutions and Prevention Strategies

Once the root cause of the P1441 code has been identified through proper diagnosis, implementing the correct repair is essential. This section covers common repair procedures and strategies to prevent recurrence of the issue.

Common Repair Procedures for P1441

Depending on the diagnostic findings, repairs for the P1441 code may include:

Replacing the faulty vent control valve/VSV assembly
Repairing or replacing damaged wiring and connectors
Cleaning corroded terminals and electrical connections
Replacing blown fuses and investigating the cause of the overload
In rare cases, replacing the charcoal canister if contaminated
Addressing any identified ECM issues (typically requires professional programming)

Preventive Maintenance for Scion EVAP System

Preventing recurrence of the P1441 code involves regular maintenance and awareness of potential issues:

Follow manufacturer-recommended service intervals
Avoid overfilling the fuel tank during refueling
Regularly inspect EVAP components during routine maintenance
Address any check engine lights promptly to prevent secondary issues
Keep the engine compartment clean to prevent debris accumulation
Use quality fuel from reputable stations to minimize contamination

Technical Specifications and Professional Considerations

Understanding the technical aspects of the EVAP system and when to seek professional assistance is crucial for proper resolution of the P1441 code.

When to Seek Professional Assistance

While some DIY enthusiasts may attempt P1441 repairs, consider professional help in these situations:

If you lack proper diagnostic tools or electrical testing experience
When the diagnosis points toward ECM issues
If multiple EVAP codes are present simultaneously
When the vehicle is still under warranty
If you’ve performed repairs but the code persists
When dealing with complex wiring issues or harness damage

Importance of Proper EVAP System Function

The EVAP system plays a critical role in your Scion’s operation and environmental compliance:

Prevents release of harmful hydrocarbons into the atmosphere
Maintains proper fuel tank pressure for optimal operation
Improves overall fuel efficiency by utilizing captured vapors
Ensures compliance with emissions regulations
Prevents fuel odor around the vehicle
Contributes to overall engine performance and drivability

Successfully diagnosing and repairing the P1441 code in your Scion requires patience, proper tools, and methodical troubleshooting. By following the outlined procedures and understanding the system’s operation, you can effectively address this EVAP system issue and restore your vehicle’s optimal performance and emissions compliance. Always clear the code after repairs and verify the fix with a test drive to ensure complete resolution.

P076D Electric H Shift Solenoid

What Does It Mean?

This is a generic diagnostic trouble code (DTC) and generally applies to OBD-II equipped vehicles with an automatic transmission.

Most automatic transmissions incorporate a number of shift solenoids, depending on the number of gears inside. The related fault codes for the “H” shift solenoid are codes P076A, P076B, P076C, P076D, and P076E, depending on the specific malfunction that alerts the PCM to set the code and turn on the Check Engine light. If you have an Overdrive light or other transmission warning light, it may also be illuminated.

The automatic transmission relies on bands and clutches to shift gears, and this is accomplished by having fluid pressure in the right place at the right time. The transmission solenoids are responsible for opening or closing valves in the valve body to allow transmission fluid to flow to the clutches and bands to move the transmission smoothly as the engine accelerates.

When the Powertrain Control Module (PCM) detects a malfunction in the “H” shift solenoid circuit, a variety of codes can be triggered depending on the specific vehicle, transmission, and the number of gears incorporated in the specific automatic transmission. In this case, the OBD-II fault code P076D is associated with an electrical malfunction in the transmission shift solenoid “H” circuit.

How Severe Is This DTC?

The severity of this code normally starts as moderate, but it can escalate to a more severe level quickly when not corrected in a timely manner.
What Are Some of the Symptoms of the Code?

Symptoms of a P076D fault code may include:

Transmission slipping
Transmission overheating
Transmission shifting harshly
Reduced fuel economy

Symptoms

potentially missed shifts
Vehicle enters limp mode
Check Engine light illuminated

What Are Some of the Common Causes of the Code?

Causes

of this P076D transmission code may include:

What Are the Troubleshooting Steps for P076D?

Before starting the troubleshooting process for any malfunction, you should research the Technical Service Bulletins (TSBs) for the specific vehicle by year, model, and transmission. In some circumstances, this can save you a lot of time in the long run by pointing you in the right direction. You should also check the vehicle’s records to verify the last time the filter and fluid were changed if possible.
Fluid and Wiring Inspections

Then, check the connectors and connections for security, corrosion, and damaged pins. This process should include all wiring and connectors for the transmission solenoids, transmission pump, and PCM. Based on the configuration, the transmission bonding should be inspected for security and bonding issues.
Advanced Steps

Advanced steps become very vehicle-specific and require appropriate advanced equipment to perform accurately. These procedures require a digital multimeter and the vehicle-specific technical references. Voltage requirements will be highly based on the specific year and model of the vehicle. You must follow the troubleshooting chart specific to your vehicle.
Continuity Checks

Replacing the fluid and filter
Repairing or replacing a faulty shift solenoid
Repairing or replacing the faulty transmission valve body
Repairing or replacing the faulty transmission
Flushing the transmission to clean the passages
Cleaning corrosion from connectors Repairing or replacing wiring
Programming or replacing PCM

P076E Intermittent Shift Solenoid H

What does it mean?

This is a generic diagnostic trouble code (DTC) and generally applies to OBD-II equipped vehicles with an automatic transmission.

Most automatic transmissions incorporate a number of shift solenoids, depending on the number of gears inside. The related trouble codes for the “H” shift solenoid are codes P076A, P076B, P076C, P076D, and P076E, based on the specific malfunction that alerts the PCM to set the code and turn on the Check Engine light. If you have an Overdrive light or other transmission warning light, it may also be illuminated.

When the Powertrain Control Module (PCM) detects a malfunction in the “H” shift solenoid circuit, a variety of codes can be triggered depending on the specific vehicle, transmission, and number of gears in the automatic transmission. In this case, the OBD-II trouble code P076E is associated with an intermittent fault in the transmission shift solenoid “H” circuit.

How severe is this DTC?

The severity of this code normally starts as moderate but can escalate to a more severe level quickly if not corrected in a timely manner.
What are some of the symptoms of the code?

Symptoms of a P076E trouble code may include:

Transmission slipping
Transmission overheating
Transmission shifting harshly
Reduced fuel economy

Symptoms

potentially missed shifts
Vehicle enters limp mode
Check Engine light illuminated

What are some common causes of the code?

Causes

of this P076E transmission code may include:

Low fluid level
Dirty or contaminated fluid
Dirty or clogged transmission filter
Faulty transmission valve body
Restricted hydraulic passages
Transmission has internal failure
Faulty shift solenoid
Corroded or damaged connector
Faulty or damaged wiring
Faulty PCM

What are the troubleshooting steps for P076E?

Before starting the troubleshooting process for any malfunction, you should research Technical Service Bulletins (TSBs) for the specific vehicle by year, model, and transmission. In some circumstances, this can save a lot of time in the long run by pointing you in the right direction. You should also check the vehicle’s records to verify the last time the filter and fluid were changed, if possible.
Fluid and Wiring Inspections

The first step is to ensure the fluid level is correct and inspect the condition of the fluid for any contamination. Next, a thorough visual inspection should be performed to check the associated wiring for obvious defects such as scraping, rubbing, bare wires, or burn spots.

Then, check the connectors and connections for security, corrosion, and damaged pins. This process should include all wiring and connectors for the transmission solenoids, transmission pump, and PCM. Based on the configuration, the transmission bonding should be inspected for security and bonding issues.
Advanced Steps

Advanced steps become very vehicle-specific and require appropriate advanced equipment to perform accurately. These procedures require a digital multimeter and vehicle-specific technical references. Voltage requirements will be highly dependent on the specific year and model of the vehicle. You must follow the troubleshooting chart specific to your vehicle.
Continuity Checks

Continuity checks should always be performed with the power disconnected from the circuit, and normal readings for wiring and connections should be 0 ohms of resistance, unless otherwise indicated by technical data. Resistance or lack of continuity indicates faulty wiring that is open or shorted and must be repaired or replaced.
What are the common repairs for this code?

P076F report 7 incorrect report

What does it mean?

Modern vehicles equipped with automatic transmissions/transaxles use a torque converter between the engine and the transmission to increase engine torque and drive the rear wheels.

This code may appear in vehicles with an automatic transmission when there is a problem shifting into 7th gear, or while driving in 7th gear. The computer-controlled automatic transmission uses multiple gear ratios to increase vehicle speed while maximizing engine power output. Newer vehicles may have more than four gears to improve fuel economy. The computer determines when to upshift or downshift between gears based on throttle position relative to vehicle speed.

The Engine Control Module (ECM), Powertrain Control Module (PCM), or Transmission Control Module (TCM) uses inputs from various sensors to verify proper transmission and component operation. Engine speed is often calculated relative to the transmission speed sensor to determine gear ratio and torque converter slippage. If the calculation doesn’t match the desired value, a diagnostic trouble code is set and the Check Engine light illuminates. Incorrect ratio codes typically require advanced mechanical capability and diagnostic tools.

Note: This code is similar to P0730, P0731, P0732, P0733, P0734 and P0736. If other transmission codes exist, repair those issues before proceeding with an incorrect gear ratio code.

Symptoms

Symptoms of a P076F trouble code may include:

Check Engine light illuminated (malfunction indicator)
Delayed shifting or no shift into 7th gear
Transmission slippage
Loss of fuel economy

Potential Causes

Causes of this DTC may include:

Low or dirty transmission fluid
Mechanical failure inside the transmission
Internal blockage within the transmission main control
Faulty shift solenoid
Faulty transmission control module

Diagnostic and Repair Steps

Always ensure to check the fluid level and condition before proceeding with diagnosis. Incorrect fluid level or dirty fluid can cause shifting problems affecting multiple gears. If only one incorrect ratio code is displayed, test drive the vehicle to determine if the gear is actually functioning.

Transmission internal clutches and bands are typically controlled by a solenoid or using fluid pressure. If there’s an electrical issue with a shift solenoid, a code specific to that fault should also be displayed. Address the electrical issue before proceeding. Blocked fluid passages inside the transmission can also prevent the vehicle from shifting into 7th gear. If there are multiple incorrect ratio codes but the transmission operates as expected, there might be a mechanical issue with the torque converter, transmission main control, or pressure problems.

If there are multiple incorrect ratio codes and shifting problems, but not all are displayed, the fault could be an internal mechanical problem within the transmission, or fluid pressure/blocked passages in the main control. A shift solenoid controlling multiple gears could also be responsible in case of internal blockage or fluid pressure issues. If there’s an electrical problem with the solenoid controlling the gears, a code should be displayed specific to the faulty solenoid.

It may be necessary to use an advanced diagnostic scan tool to determine which gear is being commanded by the transmission and to determine if engine speed matches the calculated output speed from the transmission sensor.

Thorough knowledge of transmission operation and overhaul is often required to repair this type of malfunction. Consult the factory service manual for vehicle-specific diagnostic procedures.

P0770 Shift Solenoid E Malfunction

What Does It Mean?

This is a generic diagnostic trouble code (DTC) and generally applies to OBD-II equipped vehicles with an automatic transmission.

Most automatic transmissions incorporate a number of shift solenoids, depending on the number of gears inside. The related fault codes for the “E” shift solenoid are codes P0770, P0771, P0772, P0773, and P0774, depending on the specific malfunction that alerts the PCM to set the code and illuminate the Check Engine light. If you have an Overdrive light or other transmission warning light, it may also be illuminated.

When the Powertrain Control Module (PCM) detects a malfunction in the “E” shift solenoid circuit, a variety of codes can be triggered depending on the specific vehicle, transmission, and the number of gears in the specific automatic transmission. In this case, the OBD-II fault code P0770 is associated with a general malfunction of the “E” transmission shift solenoid circuit.

How Severe Is This DTC?

The severity of this code normally starts as moderate but can escalate to a more severe level quickly if not corrected in a timely manner.
What are some of the symptoms of the code?

Symptoms of a P0770 fault code may include:

Transmission slipping
Transmission overheating
Transmission shifting harshly
Reduced fuel economy

Symptoms

potentially missed shifts
Vehicle enters limp mode
Check Engine light illuminated

What are some of the common causes of the code?

Causes

of this P0770 transmission code may include:

What are the troubleshooting steps for P0770?

Then, check the connectors and connections for security, corrosion, and damaged pins. This process should include all wiring and connectors for the transmission solenoids, transmission pump, and PCM. Based on the configuration, the transmission bonding should be inspected for security and bonding issues.
Advanced Steps

Continuity checks should always be performed with the power disconnected from the circuit, and normal readings for wiring and connections should be 0 ohms of resistance, unless otherwise indicated by the technical data. Resistance or lack of continuity indicates faulty wiring that is open or shorted and must be repaired or replaced.
What are the common repairs for this code?

P0771 Shift Solenoid E Performance / Stuck

What Does It Mean?

This is a generic diagnostic trouble code (DTC) and generally applies to OBD-II equipped vehicles with an automatic transmission.

Most automatic transmissions incorporate a number of shift solenoids, depending on the number of gears inside. The related fault codes for the “E” shift solenoid are codes P0770, P0771, P0772, P0773, and P0774, depending on the specific malfunction that alerts the PCM to set the code and turn on the Check Engine light. If you have an Overdrive light or other transmission warning light, it may also be illuminated.

When the Powertrain Control Module (PCM) detects a malfunction in the “E” shift solenoid circuit, a variety of codes can be triggered depending on the specific vehicle, transmission, and the number of gears in the specific automatic transmission. In this case, the OBD-II fault code P0771 is associated with a detected performance problem or a stuck situation in the “E” shift solenoid circuit.

How Severe Is This DTC?

The severity of this code normally starts as moderate but can escalate to a more severe level quickly if not corrected in a timely manner.
What Are Some of the Symptoms of the Code?

Symptoms of a P0771 fault code may include:

Transmission slipping
Transmission overheating
Transmission shifting harshly
Reduced fuel economy

Symptoms

Potential misfires
Vehicle enters limp mode
Check Engine light illuminated

What Are Some of the Common Causes of the Code?

Causes

of this P0771 transmission code may include:

What Are the Troubleshooting Steps for P0771?

Then, check the connectors and connections for security, corrosion, and damaged pins. This process should include all wiring and connectors for the transmission solenoids, transmission pump, and PCM. Based on the configuration, the transmission bonding should be inspected for security and bonding issues.
Advanced Steps

Continuity checks should always be performed with the power disconnected from the circuit, and normal readings for wiring and connections should be 0 ohms of resistance, unless otherwise indicated by the technical data. Resistance or lack of continuity indicates faulty wiring that is open or shorted and must be repaired or replaced.
What Are the Common Repairs for This Code?

Replacing fluid and filter
Repairing or replacing a faulty shift solenoid
Repairing or replacing the faulty transmission valve body
Repairing or replacing the faulty transmission
Flushing the transmission to clean passages
Cleaning connector corrosion
Repairing or replacing wiring
Reprogramming or replacing the PCM

P0772 Stuck E Shift Solenoid

What Does It Mean?

This is a generic diagnostic trouble code (DTC) and generally applies to OBD-II equipped vehicles with an automatic transmission.

Most automatic transmissions incorporate a number of shift solenoids, depending on the number of gears inside. The related fault codes for the “E” shift solenoid are P0770, P0771, P0772, P0773, and P0774, depending on the specific malfunction that alerts the PCM to set the code and illuminate the Check Engine light. If you have an Overdrive light or other transmission warning light, it may also be illuminated.

The automatic transmission relies on bands and clutches to shift gears, and this is accomplished by having fluid pressure in the right place at the right time. The transmission solenoids are responsible for opening or closing valves in the valve body to allow transmission fluid to flow to the clutches and bands to move the transmission smoothly as the engine accelerates.

When the Powertrain Control Module (PCM) detects a malfunction in the “E” shift solenoid circuit, a variety of codes can be triggered depending on the specific vehicle, transmission, and number of gears incorporated in the specific automatic transmission. In this case, the OBD-II fault code P0772 is associated with a detected stuck “E” transmission shift solenoid.

How Severe Is This DTC?

The severity of this code normally starts as moderate, but it can progress to a more severe level quickly when not corrected in a timely manner.
What Are Some of the Symptoms of the Code?

Symptoms of a P0772 fault code may include:

Transmission slipping
Transmission overheating
Transmission shifting harshly
Reduced fuel economy

Symptoms

potentially missed shifts
Vehicle enters limp mode
Check Engine light illuminated

What Are Some of the Common Causes of the Code?

Causes

of this P0772 transmission code may include:

What Are the P0772 Troubleshooting Steps?

Before starting the troubleshooting process for any malfunction, you should research the Technical Service Bulletins (TSBs) for the specific vehicle by year, model, and transmission. In some circumstances, this can save you a lot of time in the long run by pointing you in the right direction. You should also check the vehicle’s records to verify the last time the filter and fluid were changed if possible.
Fluid and Wiring Inspections

Then, check the connectors and connections for security, corrosion, and damaged pins. This process should include all wiring and connectors for the transmission solenoids, transmission pump, and PCM. Based on the configuration, the transmission bonding should be inspected for security and bonding issues.
Advanced Steps

Advanced steps become very vehicle-specific and require appropriate advanced equipment to perform accurately. These procedures require a digital multimeter and the vehicle-specific technical references. Voltage requirements will be highly based on the specific year and model of the vehicle. You must follow the troubleshooting chart specific to your vehicle.
Continuity Checks