Diagnostic Trouble Code (DTC) Information ECM-1320
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 signal does not follow a certain characteristics over a period of time.
The diagnostic trouble code (DTC) can be diagnosed under specific driving conditions.
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.