DTC Advanced Diagnostics: P030A, P030D, P031A, P031D, P035A, P035D (3.0L Engine)
DTC P030A: No. 1 Cylinder Ignition Coil Circuit Malfunction DTC P030D: No. 2 Cylinder Ignition Coil Circuit Malfunction DTC P031A: No. 3 Cylinder Ignition Coil Circuit Malfunction DTC P031D: No. 4 Cylinder Ignition Coil Circuit Malfunction DTC P035A: No. 5 Cylinder Ignition Coil Circuit Malfunction DTC P035D: No. 6 Cylinder Ignition Coil Circuit Malfunction
General Description
The ignition coils are controlled by the duty command from the powertrain control module (PCM) and the PCM provides energy to the ignition coil and ignites the spark plug. The output driver circuit in the PCM monitors the voltage level of the IGN terminal. If the abnormality of the terminal voltage level is detected, the PCM detects a malfunction and stores a DTC.
Monitor Execution, Sequence, Duration, DTC Type
| Execution | Continuous |
| Sequence | None |
| Duration | Depending on the driving condition |
| DTC Type | One drive cycle, MIL on |
Enable Conditions
| Condition | |
|---|---|
| State of the engine | Running |
Malfunction Threshold
The IGN terminal voltage level is in the range of open circuit voltage for at least 0.5 second* or 20 crankshaft revolutions** despite the PCM outputs OFF signal to the ignition coil.
*: During engine stall
**: During engine running
Possible Cause
The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
DTC: P030A
- No. 1 ignition coil IGN01 line open
- No. 1 ignition coil failure
DTC: P030D
- No. 2 ignition coil IGN02 line open
- No. 2 ignition coil failure
DTC: P031A
- No. 3 ignition coil IGN03 line open
- No. 3 ignition coil failure
DTC: P031D
- No. 4 ignition coil IGN04 line open
- No. 4 ignition coil failure
DTC: P035A
- No. 5 ignition coil IGN05 line open
- No. 5 ignition coil failure
DTC: P035D
- No. 6 ignition coil IGN06 line open
- No. 6 ignition coil failure
Common
- PCM internal circuit failure
Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected, the MIL comes on and a Pending DTC, a Confirmed DTC, the freeze data, and the on-board snapshot are stored in the PCM memory.
Conditions for clearing the DTC
The MIL is cleared if the malfunction does not return in three consecutive trips in which the diagnostic runs. The MIL, the Pending DTC, the Confirmed DTC, the freeze data, and the on-board snapshot can be cleared with the scan tool clear command.