Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information ECM-P030000

Condition
The engine control module (ECM) checks engine combustion regarding misfire by registering speed deviations in flywheel rotation. If a certain number of misfires are detected for several cylinders during a certain number of crankshaft rotations, the misfires are considered emission-related or capable of damaging the catalytic converter and the diagnostic trouble code is generated.
The diagnostic trouble code can be diagnosed when the engine is running.

Substitute value
- Nothing.

Possible source
- Low fuel level.
- Repeated cold starts where the engine temperature does not reach proper operating temperature between starts.
- Damaged spark plug.
- Dirty or damaged valve depressor.
- Contaminated or wrong fuel.
- Wrong fuel grade (summer fuel in the winter, certain markets).
- Air leakage.
- Damaged VVT-unit.
- Clogged/leaking injector.
- Faulty fuel pressure.
- Uneven compression.

Fault symptom[s]
- Driving/Poor performance/lacks power/At take off
- Starting/Engine hard to start/cranks slowly/Unsure when/at all times
- Idling/Uneven idle
- Driving/Poor performance/lacks power
- Driving/Hesitates/surges/Unsure when/at all times
- Driving/Hesitates/surges/During acceleration
- Driving/Hesitates/surges/During deceleration
- Driving/Hesitates/surges/At steady speed
- Warning lights and chimes/Malfunction Indicator Light ("Check engine" light) indication/no indication
- Text window and warning symbol/Text message