Diagnostic trouble code (DTC) information ECM-1200
Condition
This diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects a short-circuit to ground or supply voltage or an open-circuit in the intake air temperature (IAT) sensor.
The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.
Substitute Value
- The value for the intake air temperature (IAT) is set at 30 °C.
Possible Source
Signal too high
- Short-circuit to supply voltage in the signal cable
- Open-circuit in the signal cable
- Damaged intake air temperature (IAT) sensor (in the mass air flow (MAF) sensor).
Signal too low
- Short-circuit to ground in the signal cable
- Damaged intake air temperature (IAT) sensor (in the mass air flow (MAF) sensor).
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.