p1364 ignition coil primary circuit fault
P1364 Ignition Coil Primary Circuit Fault
- OBD2 Code: P1364
- Description: Ignition coil primary circuit fault.
- Definition: This code indicates that the Engine Control Module (ECM) has detected a malfunction in the ignition coil’s primary circuit. The issue could be due to a faulty ignition coil, wiring problems, or issues with the ECM itself.
p1364 – Ignition Coil Primary Circuit Fault
Typical Severity: Moderate
Common Causes
P1364 – Ignition Coil Primary Circuit Fault
Common Causes:
- Faulty ignition coil
- Open or short in the wiring harness connected to the ignition coil
- Poor electrical connection at the ignition coil
- Faulty Engine Control Module (ECM)
Common Misdiagnosis
html
OBD2 Code: P1364
Description: Ignition Coil Primary Circuit Fault
Common Misdiagnosis: Replacing the ignition coil without checking for wiring issues or a faulty ignition control module.
Common Diagnostic Steps
html
OBD2 Code: P1364 – Ignition Coil Primary Circuit Fault
Description: This code indicates a malfunction in the ignition coil primary circuit.
- Check for any stored trouble codes and freeze frame data to understand when the fault occurred.
- Inspect the ignition coil for physical damage or signs of wear.
- Examine the wiring and connectors related to the ignition coil for corrosion, damage, or loose connections.
- Test the ignition coil’s resistance using a multimeter to ensure it is within manufacturer specifications.
- Verify that there is proper voltage supply to the ignition coil from the battery and ECM/PCM.
- Use an oscilloscope to check for proper signal waveform from the ECM/PCM to the ignition coil.
- If applicable, swap with a known good ignition coil to see if the problem persists.
- Inspect and test related components such as spark plugs and wires for faults that could affect performance.
- If all tests pass but code remains, consider reprogramming or replacing ECM/PCM as a last resort after verifying all other possibilities have been exhausted.