Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information ECM-247B

Condition




The diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers that the pump current has ceased and the front heated oxygen sensor (HO2S) signal has been set to a default value.

Substitute value
None.

Possible source
- Contact resistance and oxidation in the terminals
- Open-circuit in the cable for pump current
- Damaged front heated oxygen sensor (HO2S).

Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.