Diagnostic Trouble Code (DTC) Information ECM-132D
Condition
The engine control module (ECM) checks the signal for the intake air temperature.
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that the difference between the signals from the intake air temperature (IAT) sensor and the engine coolant temperature (ECT) sensor is more than 50 °C after the engine has been off for a certain amount of time.
The diagnostic trouble code (DTC) can be diagnosed when the engine is running.
Substitute Value
- Predefined value for intake air temperature
- Three-way catalytic converter (TWC) preheating and idle air trim diagnostics are disabled.
Possible Source
- Contact resistance or oxidation in the intake air temperature (IAT) sensor terminals
- Damaged intake air temperature (IAT) sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- Poor performance.