Diagnostic Trouble Code (DTC) Information ECM-142C: Notes
Condition
The central electronic module (CEM) transmits the signal from the outside temperature sensor via CAN to the engine control module (ECM).
The diagnostic trouble code (DTC) is stored in the engine control module (ECM) if the signal from the engine control module (ECM) is determined to be above its normal range. The fault is diagnosed at ignition on or with the engine running.
Substitute Value
Value from the engine intake air temperature (IAT) sensor in the intake manifold is used.
Possible Source
- Damaged outside temperature sensor
- Short-circuit to ground in the signal cable.
Fault symptom[s]
- Starting/Engine hard to start/cranks slowly/Unsure when/at all times
- Gauges/Ambient temperature gauge not accurate/does not work