DTC ECM-1200

Condition
Diagnostic trouble code (DTC) ECM-1200 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 30 degrees C (86 degrees F).

Possible source

Signal too high:
- short-circuit to supply voltage in the signal cable
- open-circuit in signal cable defective mass air flow (MAF) sensor.

Signal too low:
- short-circuit to ground in signal cable
- defective mass air flow (MAF) sensor.

Fault symptom[s]
None.