Diagnostic Trouble Code
P2329
Ignition Coil J Secondary Circuit
Technical Description P2329
Ignition Coil J Secondary Circuit
Severity Level P2329
When a P2329 is stored, the cause should be diagnosed as soon as possible. Symptoms which likely accompany these codes will usually demand immediate attention.
Symptoms P2329
1
Engine misfire
2
Diminished engine performance
3
Reduced fuel efficiency
4
Other related codes
5
Fuel injector operation for the affected cylinder may be disabled by the PCM
Possible Causes P2329
1
Bad spark plug wire or boot
2
Malfunctioning relay or blown fuse (fusible link)
3
Open or shorted wiring or wiring connectors (wildlife damage)
4
Defective ignition coil
5
Faulty camshaft or crankshaft sensor or wiring
Solutions & Repair Steps P2329
You will need a diagnostic scanner, a digital volt/ohmmeter (DVOM), and a source of reliable vehicle information in order to accurately diagnose a code P2329.
You may save yourself time and trouble by searching for technical service bulletins (TSB) that replicate the code stored, vehicle (year, make, model, and engine), and symptoms exhibited. This information may be found in your vehicle information source. If you find the right TSB, it could yield a speedy solution to your diagnosis.
After you connect the scanner to the vehicle diagnostic port and retrieve all stored codes and pertinent freeze frame data, write the information down (in case the code proves to be an intermittent one). After that, clear the codes and test drive 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, because the code is intermittent. The condition which caused the P2329 to be stored may need to worsen before an accurate diagnosis can be made. If the code is restored, continue with the diagnosis.
You may obtain connector face views, connector pinout charts, component locator charts, wiring diagrams, and diagnostic flow charts (pertaining to the code and vehicle in question) using your source of vehicle information.
Perform a visual inspection of related wiring and connectors. Repair or replace wiring that has been cut, burned, or damaged. Scheduled maintenance includes the replacement of spark plug wires and boots. If the vehicle in question is beyond the recommended maintenance interval for a tune up, suspect bad spark plug wires/boots as the cause of a stored P2329.
Spark plug boots that are torn, burnt, or contaminated by fluid should be considered defective. Gain access to 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 any HEI is found there. If there is HEI at the spark plug, suspect that the plug is defective or there is a PCM error. If there is no HEI at the spark plug but it is strong at the coil, suspect a bad plug wire or boot. If there is no HEI at the coil, suspect that the coil is defective. HEI should be tested (carefully) with the engine running.
You may save yourself time and trouble by searching for technical service bulletins (TSB) that replicate the code stored, vehicle (year, make, model, and engine), and symptoms exhibited. This information may be found in your vehicle information source. If you find the right TSB, it could yield a speedy solution to your diagnosis.
After you connect the scanner to the vehicle diagnostic port and retrieve all stored codes and pertinent freeze frame data, write the information down (in case the code proves to be an intermittent one). After that, clear the codes and test drive 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, because the code is intermittent. The condition which caused the P2329 to be stored may need to worsen before an accurate diagnosis can be made. If the code is restored, continue with the diagnosis.
You may obtain connector face views, connector pinout charts, component locator charts, wiring diagrams, and diagnostic flow charts (pertaining to the code and vehicle in question) using your source of vehicle information.
Perform a visual inspection of related wiring and connectors. Repair or replace wiring that has been cut, burned, or damaged. Scheduled maintenance includes the replacement of spark plug wires and boots. If the vehicle in question is beyond the recommended maintenance interval for a tune up, suspect bad spark plug wires/boots as the cause of a stored P2329.
Spark plug boots that are torn, burnt, or contaminated by fluid should be considered defective. Gain access to 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 any HEI is found there. If there is HEI at the spark plug, suspect that the plug is defective or there is a PCM error. If there is no HEI at the spark plug but it is strong at the coil, suspect a bad plug wire or boot. If there is no HEI at the coil, suspect that the coil is defective. HEI should be tested (carefully) with the engine running.