P1073

Condition







Diagnostic trouble code (DTC) ECM-1100 is stored if the control module registers that the sensor circuit has a short-circuit to ground/voltage or if there is an open-circuit in the circuit.

Substitute value
If the mass air flow (MAF) sensor temperature sensor is OK, the value from it is used. Otherwise the value is set at 20°C (68°F).

Possible source

Signal too high:
- open-circuit in signal cable
- short-circuit to supply voltage in the signal cable
- defective outside temperature sensor.

Signal too low:
- short-circuit to ground in the signal cable
- defective outside temperature sensor.

Fault symptom[s]
None.