How serious is this DTC?

When a P2328 is stored, the cause must be diagnosed as soon as possible. The symptoms that likely accompany these codes will generally require immediate attention.

What are some of the symptoms of the code?

Symptoms of a P2328 fault code may include:

• Engine misfires
• Decreased engine performance
• Reduced fuel efficiency
• Other related codes
• Fuel injector operation for the affected cylinder may be disabled by the PCM

What are some common causes of the code?

Causes

of this code may include:

• Faulty relay or blown fuse (fuse link)
• PCM failure
• Open or shorted wiring or connectors (damage from wildlife)
• Faulty ignition coil
• Defective camshaft or crankshaft sensor or wiring

What are the troubleshooting steps for P2328?

You will need a diagnostic scanner, a digital volt/ohmmeter (DVOM), and a reliable source of vehicle information to accurately diagnose a P2328 code.

You can save time and trouble by searching for Technical Service Bulletins (TSBs) that match the stored code, the vehicle (year, make, model, and engine), and the symptoms presented. This information can be found in your vehicle information source. If you find the right TSB, it may provide a quick solution to your diagnosis.

After connecting the scanner to the vehicle’s diagnostic port and retrieving all stored codes and relevant freeze frame data, note the information (in case the code turns out to be intermittent). After that, clear the codes and test the vehicle until one of two things happens; the code is restored or the PCM enters readiness mode.

The code may be more difficult to diagnose if the PCM enters readiness mode at this point, as the code is intermittent. The condition that caused the P2328 to be stored may need to worsen before an accurate diagnosis can be made. If the code is restored, proceed with the diagnosis.

You can obtain connector face views, connector pinout diagrams, component location diagrams, wiring diagrams, and diagnostic flowcharts (related to the code and vehicle in question) using your vehicle information source.

Perform a visual inspection of the associated wiring and connectors. Repair or replace wiring that has been cut, burned, or damaged. Wiring on top of the engine is often damaged by wildlife trying to stay warm in cold climates.

Use the DVOM to test the voltage and ground circuits at the ignition coil in question. If no voltage is detected, check the system relay and associated fuses. Replace faulty relays and/or blown (or otherwise defective) fuses as needed.

If voltage and ground are detected at the coil, test the corresponding ground circuit at the PCM connector with the engine running. If a ground pulse is detected there, suspect an open circuit between the coil in question and the PCM. If no ground pulse is found there, suspect a faulty PCM or a programming error.

How severe is this DTC?

When a P2329 is stored, the cause should be diagnosed as soon as possible. The symptoms that likely accompany these codes will generally require immediate attention.

What are some of the symptoms of the code?

Symptoms of a P2329 trouble code may include:

• Engine misfires
• Decreased engine performance
• Reduced fuel efficiency
• Other related codes
• Fuel injector operation for the affected cylinder may be disabled by the PCM

What are some common causes of the code?

Causes

of this code may include:

• Bad spark plug wire or boot
• Faulty relay or blown fuse (fuse link)
• Open or shorted wiring or wiring connectors (wildlife damage)
• Faulty ignition coil
• Faulty camshaft or crankshaft sensor or wiring

What are the troubleshooting steps for P2329?

You will need a diagnostic scanner, a digital volt/ohmmeter (DVOM), and a reliable source of vehicle information to accurately diagnose a P2329 code.

You can save yourself time and trouble by searching for Technical Service Bulletins (TSBs) that match the stored code, the vehicle (year, make, model, and engine), and the symptoms presented. This information can be found in your vehicle information source. If you find the right TSB, it might provide a quick solution to your diagnosis.

After connecting the scanner to the vehicle’s diagnostic port and retrieving all stored codes and relevant freeze frame data, note the information (in case the code turns out to be intermittent). After that, clear the codes and test the vehicle until one of two things happens; the code is restored or the PCM enters readiness mode.

The code may be more difficult to diagnose if the PCM enters readiness mode at this point, as the code is intermittent. The condition that caused the P2329 to be stored may need to worsen before an accurate diagnosis can be made. If the code is restored, proceed with the diagnosis.

You can obtain connector face views, connector pinout charts, component location diagrams, wiring diagrams, and diagnostic flowcharts (related to the code and vehicle in question) using your vehicle information source.

Perform a visual inspection of the associated wiring and connectors. Repair or replace wiring that has been cut, burned, or damaged. Scheduled maintenance includes replacing spark plug wires and boots. If the vehicle in question is beyond the recommended maintenance interval for a tune-up, suspect bad ignition wires/boots as the cause of a stored P2329.

Spark plug boots that are torn, burned, or contaminated with fluid should be considered faulty. Access the junction between the ignition coil and the spark plug wire. Check for high-energy ignition (HEI) at the spark plug. If none is detected, disconnect the spark plug wire from the coil and see if there is HEI there. If there is HEI at the spark plug, suspect a faulty spark plug or a PCM error. If there is no HEI at the spark plug but it is strong at the coil, suspect a bad spark plug wire or boot. If there is no HEI at the coil, suspect a faulty coil. HEI should be tested (carefully) with the engine running.

How serious is this DTC?

When a P2330 is stored, the cause must be diagnosed as soon as possible. The symptoms that likely accompany these codes will generally require immediate attention.

What are some of the symptoms of the code?

Symptoms of a P2330 trouble code may include:

• Engine misfires
• Decreased engine performance
• Reduced fuel efficiency
• Other related codes
• Fuel injector operation for the affected cylinder may be disabled by the PCM

What are some common causes of the code?

Causes

of this code may include:

• Faulty relay or blown fuse (fuse link)
• PCM failure
• Open or shorted wiring or wiring connectors (damage caused by wildlife)
• Faulty ignition coil
• Faulty camshaft or crankshaft sensor or wiring

What are the troubleshooting steps for P2330?

You will need a diagnostic scanner, a digital volt/ohmmeter (DVOM), and a reliable source of vehicle information to accurately diagnose a P2330 code.

You can save yourself time and trouble by searching for Technical Service Bulletins (TSBs) that match the recorded code, the vehicle (year, make, model, and engine), and the symptoms presented. This information can be found in your vehicle information source. If you find the right TSB, it might provide a quick solution to your diagnosis.

After connecting the scanner to the vehicle’s diagnostic port and retrieving all stored codes and relevant freeze frame data, note the information (in case the code turns out to be intermittent). After that, clear the codes and test the vehicle until one of two things happens; the code is restored or the PCM enters readiness mode.

The code may be more difficult to diagnose if the PCM enters readiness mode at this point, as the code is intermittent. The condition that caused the P2330 to be stored may need to worsen before an accurate diagnosis can be made. If the code is restored, proceed with the diagnosis.

You can obtain connector face views, connector pinout diagrams, component location diagrams, wiring diagrams, and diagnostic flowcharts (related to the specific code and vehicle) using your vehicle information source.

Perform a visual inspection of the associated wiring and connectors. Repair or replace wiring that has been cut, burned, or damaged. Wiring on top of the engine is often damaged by wildlife trying to stay warm in cold climates.

Use the DVOM to test the voltage and ground circuits at the ignition coil in question. If no voltage is detected, check the system relay and associated fuses. Replace faulty relays and/or blown (or otherwise defective) fuses as needed.

If voltage and ground are detected at the coil, test the ground circuit corresponding to the PCM connector with the engine running. If a ground pulse is detected there, suspect an open circuit between the coil in question and the PCM. If no ground pulse is found there, suspect a faulty PCM or a programming error.

How serious is this DTC?

When a P2331 is stored, the cause must be diagnosed as soon as possible. The symptoms that likely accompany these codes will generally require immediate attention.

What are some of the symptoms of the code?

Symptoms of a P2331 trouble code may include:

• Engine misfires
• Decreased engine performance
• Reduced fuel efficiency
• Other related codes
• Fuel injector operation for the affected cylinder may be disabled by the PCM

What are some common causes of the code?

Causes

of this code may include:

• Faulty relay or blown fuse (fuse link)
• PCM failure
• Open or shorted wiring or wiring connectors (damage caused by wildlife)
• Faulty ignition coil
• Defective camshaft or crankshaft sensor or wiring

What are the troubleshooting steps for P2331?

You will need a diagnostic scanner, a digital volt/ohmmeter (DVOM), and a reliable source of vehicle information to accurately diagnose a P2331 code.

You can save yourself time and trouble by searching for Technical Service Bulletins (TSBs) that match the recorded code, the vehicle (year, make, model, and engine), and the symptoms presented. This information can be found in your vehicle information source. If you find the right TSB, it might provide a quick solution to your diagnosis.

After connecting the scanner to the vehicle’s diagnostic port and retrieving all stored codes and relevant freeze frame data, note the information (in case the code turns out to be intermittent). After that, clear the codes and test the vehicle until one of two things happens; the code is restored or the PCM enters readiness mode.

The code may be more difficult to diagnose if the PCM enters readiness mode at this point, as the code is intermittent. The condition that caused the P2331 to be stored may need to worsen before an accurate diagnosis can be made. If the code is restored, proceed with the diagnosis.

You can obtain connector face views, connector pinout diagrams, component location diagrams, wiring diagrams, and diagnostic flowcharts (related to the code and vehicle in question) using your vehicle information source.

Perform a visual inspection of the associated wiring and connectors. Repair or replace wiring that has been cut, burned, or damaged. Wiring on top of the engine is often damaged by wildlife trying to stay warm in cold climates.

Use the DVOM to test the voltage and ground circuits at the ignition coil in question. If no voltage is detected, check the system relay and associated fuses. Replace faulty relays and/or blown (or otherwise defective) fuses as needed.

If voltage and ground are detected at the coil, test the corresponding ground circuit at the PCM connector with the engine running. If a ground pulse is detected there, suspect an open circuit between the coil in question and the PCM. If no ground pulse is found there, suspect a faulty PCM or a programming error.

How Severe Is This DTC?

When a P2332 is stored, the cause must be diagnosed as soon as possible. The symptoms that likely accompany these codes will generally require immediate attention.

What Are Some of the Symptoms of the Code?

Symptoms of a P2332 trouble code may include:

• Engine misfires
• Decreased engine performance
• Reduced fuel efficiency
• Other related codes
• Fuel injector operation for the affected cylinder may be disabled by the PCM

What Are Some Common Causes of the Code?

Causes of this code may include:

• Bad spark plug wire or boot
• Faulty relay or blown fuse (fuse link)
• Open or shorted wiring or wiring connectors (damage from wildlife)
• Faulty ignition coil
• Defective camshaft or crankshaft sensor or wiring

What Are the P2332 Troubleshooting Steps?

You will need a diagnostic scanner, a digital volt/ohmmeter (DVOM), and a reliable source of vehicle information to accurately diagnose a P2332 code.

You can save time and trouble by searching for Technical Service Bulletins (TSBs) that match the stored code, the vehicle (year, make, model, and engine), and the symptoms presented. This information can be found in your vehicle information source. If you find the right TSB, it may provide a quick solution to your diagnosis.

After connecting the scanner to the vehicle’s diagnostic port and retrieving all stored codes and relevant freeze frame data, note the information (in case the code turns out to be intermittent). After that, clear the codes and test the vehicle until one of two things happens; the code is restored or the PCM enters readiness mode.

The code may be more difficult to diagnose if the PCM enters readiness mode at this point, as the code is intermittent. The condition that caused the P2332 to be stored may need to worsen before an accurate diagnosis can be made. If the code is restored, proceed with the diagnosis.

You can obtain connector face views, connector pinout diagrams, component location diagrams, wiring diagrams, and diagnostic flowcharts (related to the code and the vehicle in question) using your vehicle information source.

Perform a visual inspection of the associated wiring and connectors. Repair or replace wiring that has been cut, burned, or damaged. Scheduled maintenance includes replacing spark plug wires and boots. If the vehicle in question is beyond the recommended maintenance interval for a tune-up, suspect faulty ignition wires/boots as the cause of a stored P2332.

Spark plug boots that are torn, burned, or contaminated with fluid should be considered defective. Access the junction between the ignition coil and the spark plug wire. Check for high-energy ignition (HEI) at the spark plug. If none is detected, disconnect the spark plug wire from the coil and see if there is HEI there. If there is HEI at the spark plug, suspect a faulty spark plug or a PCM error. If there is no HEI at the spark plug but it is strong at the coil, suspect a bad spark plug wire or boot. If there is no HEI at the coil, suspect a faulty coil. HEI should be tested (carefully) with the engine running.

How serious is this DTC?

When a P2333 is stored, the cause must be diagnosed as soon as possible. The symptoms that likely accompany these codes will generally require immediate attention.

What are some of the symptoms of the code?

Symptoms of a P2333 trouble code may include:

• Engine misfires
• Decreased engine performance
• Reduced fuel efficiency
• Other related codes
• Fuel injector operation for the affected cylinder may be disabled by the PCM

What are some common causes of the code?

Causes

of this code may include:

• Faulty relay or blown fuse (fuse link)
• PCM failure
• Open or shorted wiring or wiring connectors (damage caused by wildlife)
• Faulty ignition coil
• Defective camshaft or crankshaft sensor or wiring

What are the troubleshooting steps for P2333?

You will need a diagnostic scanner, a digital volt/ohmmeter (DVOM), and a reliable source of vehicle information to accurately diagnose a P2333 code.

You can save yourself time and trouble by searching for Technical Service Bulletins (TSBs) that match the recorded code, the vehicle (year, make, model, and engine), and the symptoms presented. This information can be found in your vehicle information source. If you find the right TSB, it might provide a quick solution to your diagnosis.

After connecting the scanner to the vehicle’s diagnostic port and retrieving all stored codes and relevant freeze frame data, note the information (in case the code turns out to be intermittent). After that, clear the codes and test the vehicle until one of two things happens; the code is restored or the PCM enters readiness mode.

The code may be more difficult to diagnose if the PCM enters readiness mode at this point, as the code is intermittent. The condition that caused the P2333 to be stored may need to worsen before an accurate diagnosis can be made. If the code is restored, proceed with the diagnosis.

You can obtain connector face views, connector pinout diagrams, component location diagrams, wiring diagrams, and diagnostic flowcharts (related to the code and vehicle in question) using your vehicle information source.

Perform a visual inspection of the associated wiring and connectors. Repair or replace wiring that has been cut, burned, or damaged. Wiring on top of the engine is often damaged by wildlife trying to stay warm in cold climates.

Use the DVOM to test the voltage and ground circuits at the ignition coil in question. If no voltage is detected, check the system relay and associated fuses. Replace faulty relays and/or blown (or otherwise defective) fuses as needed.

If voltage and ground are detected at the coil, test the ground circuit corresponding to the PCM connector with the engine running. If a ground pulse is detected there, suspect an open circuit between the coil in question and the PCM. If no ground pulse is found there, suspect a faulty PCM or a programming error.

How Severe Is This DTC?

When a P2334 is stored, the cause must be diagnosed as soon as possible. The symptoms that likely accompany these codes will generally require immediate attention.

What Are Some of the Symptoms of the Code?

Symptoms of a P2334 trouble code may include:

• Engine misfires
• Decreased engine performance
• Reduced fuel efficiency
• Other related codes
• Fuel injector operation for the affected cylinder may be disabled by the PCM

What Are Some Common Causes of the Code?

Causes of this code may include:

• Faulty relay or blown fuse (fuse link)
• PCM failure
• Open or shorted wiring or wiring connectors (damage caused by wildlife)
• Faulty ignition coil
• Defective camshaft or crankshaft sensor or wiring

What Are the P2334 Troubleshooting Steps?

You will need a diagnostic scanner, a digital volt/ohmmeter (DVOM), and a reliable source of vehicle information to accurately diagnose a P2334 code.

You can save time and trouble by searching for Technical Service Bulletins (TSBs) that match the stored code, the vehicle (year, make, model, and engine), and the symptoms presented. This information can be found in your vehicle information source. If you find the right TSB, it may provide a quick solution to your diagnosis.

After connecting the scanner to the vehicle’s diagnostic port and retrieving all stored codes and relevant freeze frame data, note the information (in case the code proves to be intermittent). After that, clear the codes and test the vehicle until one of two things happens: the code is restored or the PCM enters readiness mode.

The code may be more difficult to diagnose if the PCM enters readiness mode at this point, as the code is intermittent. The condition that caused the P2334 to be stored may need to worsen before an accurate diagnosis can be made. If the code is restored, proceed with the diagnosis.

You can obtain connector face views, connector pinout diagrams, component location diagrams, wiring diagrams, and diagnostic flowcharts (related to the code and vehicle in question) using your vehicle information source.

Perform a visual inspection of the associated wiring and connectors. Repair or replace wiring that has been cut, burned, or damaged. Wiring on top of the engine is often damaged by wildlife trying to stay warm in cold climates.

Use the DVOM to test the voltage and ground circuits at the ignition coil in question. If no voltage is detected, check the system relay and associated fuses. Replace faulty relays and/or blown (or otherwise defective) fuses as needed.

If voltage and ground are detected at the coil, test the corresponding ground circuit at the PCM connector with the engine running. If a ground pulse is detected there, suspect an open circuit between the coil in question and the PCM. If no ground pulse is found there, suspect a faulty PCM or a programming error.

How severe is this DTC?

When a P2335 is stored, the cause must be diagnosed as soon as possible. The symptoms that likely accompany these codes will generally require immediate attention.

What are some of the symptoms of the code?

Symptoms of a P2335 trouble code may include:

• Engine misfires
• Decreased engine performance
• Reduced fuel efficiency
• Other related codes
• Fuel injector operation for the affected cylinder may be disabled by the PCM

What are some common causes of the code?

Causes

of this code may include:

• Bad spark plug wire or boot
• Faulty relay or blown fuse (fuse link)
• Open or shorted wiring or wiring connectors (wildlife damage)
• Faulty ignition coil
• Faulty camshaft or crankshaft sensor or wiring

What are the troubleshooting steps for P2335?

You will need a diagnostic scanner, a digital volt/ohmmeter (DVOM), and a reliable source of vehicle information to accurately diagnose a P2335 code.

You can save yourself time and trouble by searching for Technical Service Bulletins (TSBs) that match the stored code, the vehicle (year, make, model, and engine), and the symptoms presented. This information can be found in your vehicle information source. If you find the right TSB, it might provide a quick solution to your diagnosis.

After connecting the scanner to the vehicle’s diagnostic port and retrieving all stored codes and relevant freeze frame data, note the information (in case the code turns out to be intermittent). After that, clear the codes and test the vehicle until one of two things happens; the code is restored or the PCM enters readiness mode.

The code may be more difficult to diagnose if the PCM enters readiness mode at this point, as the code is intermittent. The condition that caused the P2335 to be stored may need to worsen before an accurate diagnosis can be made. If the code is restored, proceed with the diagnosis.

You can obtain connector face views, connector pinout charts, component location diagrams, wiring diagrams, and diagnostic flowcharts (related to the code and vehicle in question) using your vehicle information source.

Perform a visual inspection of the associated wiring and connectors. Repair or replace wiring that has been cut, burned, or damaged. Scheduled maintenance includes replacing spark plug wires and boots. If the vehicle in question is beyond the recommended maintenance interval for a tune-up, suspect bad ignition wires/boots as the cause of a stored P2335.

Spark plug boots that are torn, burned, or contaminated with fluid should be considered faulty. Access the junction between the ignition coil and the spark plug wire. Check for high-energy ignition (HEI) at the spark plug. If none is detected, disconnect the spark plug wire from the coil and see if there is HEI there. If there is HEI at the spark plug, suspect a faulty spark plug or a PCM error. If there is no HEI at the spark plug but it is strong at the coil, suspect a bad spark plug wire or boot. If there is no HEI at the coil, suspect a faulty coil. HEI must be tested (carefully) with the engine running.

How serious is this DTC?

When a P2336 is stored, the cause must be diagnosed as soon as possible. Symptoms contributing to the storage of this type of code can range from minimal to catastrophic.

What are some of the symptoms of the code?

Symptoms of a P2336 trouble code may include:

• Engine noise
• Decreased engine performance
• Reduced fuel efficiency
• Other related codes
• There may be no distinct symptoms

What are some common causes of the code?

Causes

of this code may include:

• Faulty knock sensor
• Engine malfunction or incorrect fuel type
• Open or shorted wiring or wiring connectors
• Engine noise caused by component failure
• PCM or programming error

What are the troubleshooting steps for P2336?

Ensure the engine is filled to the appropriate level with the correct oil and is in good working condition. Actual engine noises, such as sparking, must be eliminated before a P2336 diagnosis can be made.

You will need a diagnostic scanner, a digital volt/ohmmeter (DVOM), and a reliable source of vehicle information to accurately diagnose a P2336 code.

You can save time and trouble by searching for Technical Service Bulletins (TSBs) that match the stored code, the vehicle (year, make, model, and engine), and the symptoms presented. This information can be found in your vehicle information source. If you find the right TSB, it may provide a quick solution to your diagnosis.

After connecting the scanner to the vehicle’s diagnostic port and retrieving all stored codes and relevant freeze frame data, note the information (in case the code proves to be intermittent). After that, clear the codes and test the vehicle until one of two things happens; the code is restored or the PCM enters readiness mode.

The code may be more difficult to diagnose if the PCM enters readiness mode at this point, as the code is intermittent. The condition that caused the P2336 to be stored may need to worsen before an accurate diagnosis can be made. If the code is restored, proceed with the diagnosis.

You can obtain connector face views, connector pinout diagrams, component location diagrams, wiring diagrams, and diagnostic flowcharts (related to the code and vehicle in question) using your vehicle information source.

Perform a visual inspection of the wiring and associated connectors. Repair or replace wiring that has been cut, burned, or damaged. Scheduled maintenance includes replacing wires and spark plug boots. If the vehicle in question is beyond the recommended maintenance interval for a tune-up, suspect faulty ignition wires/spark plug boots as the cause of a stored P2336.

After disconnecting the PCM, use the DVOM to check continuity in the knock sensor circuit. Since the knock sensor is usually screwed into the engine block, be careful not to burn yourself with coolant or oil when removing the sensor. Test continuity through the sensor and back to the PCM connector.

The P2336 code can usually be attributed to a PCM programming error, a faulty knock sensor, or engine knocking.

How serious is this DTC?

When a P2337 is stored, the cause must be diagnosed as soon as possible. Symptoms contributing to the storage of this type of code can range from minimal to catastrophic.

What are some of the symptoms of the code?

Symptoms of a P2337 trouble code may include:

• Engine noise
• Decreased engine performance
• Reduced fuel efficiency
• Other related codes
• There may be no distinctive symptoms

What are some common causes of the code?

Causes

of this code may include:

• Faulty knock sensor
• Engine malfunction or incorrect fuel type
• Open or shorted wiring or wiring connectors
• Engine noise caused by a malfunction
• PCM or programming error

What are the troubleshooting steps for P2337?

Ensure the engine is filled to the appropriate level with the correct oil and is in good working condition. Actual engine noises, such as sparking, must be eliminated before a P2337 diagnosis can be made.

You will need a diagnostic scanner, a digital volt/ohmmeter (DVOM), and a reliable source of vehicle information to accurately diagnose a P2337 code.

You can save time and trouble by searching for Technical Service Bulletins (TSBs) that match the stored code, the vehicle (year, make, model, and engine), and the symptoms presented. This information can be found in your vehicle information source. If you find the right TSB, it may provide a quick solution to your diagnosis.

After connecting the scanner to the vehicle’s diagnostic port and retrieving all stored codes and relevant freeze frame data, note the information (in case the code turns out to be intermittent). After that, clear the codes and test the vehicle until one of two things happens; the code is restored or the PCM enters readiness mode.

The code may be more difficult to diagnose if the PCM enters readiness mode at this point, as the code is intermittent. The condition that caused the P2337 to be stored may need to worsen before an accurate diagnosis can be made. If the code is restored, proceed with the diagnosis.

You can obtain connector face views, connector pinout diagrams, component location charts, wiring diagrams, and diagnostic flowcharts (related to the code and vehicle in question) using your vehicle information source.

Perform a visual inspection of the wiring and associated connectors. Repair or replace wiring that is cut, burned, or damaged. Scheduled maintenance includes replacing spark plug wires and boots. If the vehicle in question is beyond the recommended maintenance interval for a tune-up, suspect faulty ignition wires/boots as the cause of a stored P2337.

After disconnecting the PCM, use the DVOM to check continuity in the knock sensor circuit. Since the knock sensor is usually screwed into the engine block, be careful not to burn yourself with coolant or oil when removing the sensor. Test continuity through the sensor and back to the PCM connector.