Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information ECM-303C

Condition




In certain operating conditions the engine control module (ECM) checks the signal from the front knock sensor (KS). The diagnostic trouble code (DTC) is stored if the signal from the front knock sensor (KS) is too high in these operating conditions.
The diagnostic trouble code (DTC) can be diagnosed when the engine is running.

Substitute value
- Safety retardation of ignition advance
- Reduced boost pressure.

Possible source
- Short-circuit to ground in the signal cable
- Incorrectly installed knock sensor (KS)
- Damaged temperature sensor.

Fault symptom[s]
- Poor performance.