Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information ECM-2200

Condition




As its starting point the engine control module (ECM) takes an initial value for the voltage at the probe which is a minimum of 0 V and a maximum of 5 V. When probe heating is active and at least 1 fuel shut off has been performed, the maximum value for the heated oxygen sensor (HO2S) must exceed 0.6 V and the minimum value must be 0.1 V. A diagnostic trouble code (DTC) is stored if these limits are not reached within approximately 5 minutes.

Substitute value
- Rear heated oxygen sensor (HO2S) control is disabled.

Possible source

Signal too high
- Short-circuit to supply voltage in the signal cable.

Signal too low
- Short-circuit to ground in the signal cable
- Open-circuit in the signal cable
- Damaged rear heated oxygen sensor (HO2S).

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