Diagnostic Trouble Code (DTC) Information

ECM-2200 REAR HEATED OXYGEN SENSOR (HO2S)
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION




Condition
The Control module takes as its starting point an initialization value for the probe voltage which is at least 0 V and a maximum of 5 V. If probe heating is active and at least 1 fuel shut-off has been made, the Heated Oxygen Sensor (HO2S) maximum value must exceed 0.6 V and the minimum value must be below 0.1 V. Diagnostic Trouble Code (DTC) ECM-2200 is stored if these limit values are not achieved after approximately 5 minutes and both accumulated and actual heated oxygen sensor heating has reached certain limit values.

Condition
Rear Heated Oxygen Sensor (HO2S) control is disabled.

Possible source

Signal too high
- signal cable short-circuited to supply.

Signal too low
- short-circuit to ground in signal cable
- open-circuit in signal cable
- defective rear Heated Oxygen Sensor (HO2S).

Condition
None.