DTC ECM-1400

Condition







Diagnostic trouble code (DTC) ECM-1400 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
A value from mass air flow (MAF) sensor is used.

Possible source

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

Signal too low
- short-circuit to ground in the signal cable
- defective pressure sensor.

Fault symptom[s]
None.