Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information ECM-3502

Condition
Due to the effect on emissions, a diagnostic trouble code (DTC) is stored for the relevant cylinder if the engine control module (ECM) registers that the engine is misfiring. The control module checks if the misfiring is in one specific cylinder or in multiple cylinders.

Substitute value
- None.

Possible source
- Low fuel level
- Many cold starts without the engine reaching operating temperature reduces the performance of the spark plugs
- Moisture, flashover at spark plug wells
- Damaged spark plug
- Contaminated or incorrect fuel
- Blocked crankcase ventilation.
- Damaged injector or wiring
- Faulty fuel pressure
- Incorrect camshaft control.
- Uneven compression

Fault symptom[s]
- The engine misfires
- The engine is difficult to start
- Uneven idle
- Engine not firing on all cylinders
- Deterioration in performance
- Malfunction indicator lamp (MIL) lit.