Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information

Condition




Engine control module (ECM) checks the information from the knock sensor (KS) during normal driving conditions. Diagnostic trouble code (DTC) ECM-340A is stored in the engine control module (ECM) if the engine control module (ECM) registers that the signal from knock sensor (KS) deviates from the tolerance.

Substitute value
Knock control is disabled
ignition retarded for safety reasons

Possible source

Too little roar:
- contact resistance in connectors
- defective knock sensor (KS)

Possible source

Too much roar:
- contact resistance in connectors
- defective knock sensor (KS)

Fault symptom[s]
- poor performance.