Diagnostic Trouble Code (DTC) Information ECM-1400
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 manifold absolute pressure (MAP) sensor circuit.
The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.
Substitute Value
- The value from the mass air flow (MAF) sensor is used.
Possible Source
Signal too high
- Short-circuit to supply voltage in the signal cable
- Open-circuit in the signal cable
- Damaged manifold absolute pressure (MAP) sensor.
- Damaged engine control module (ECM).
Signal too low
- Short-circuit to ground in the signal cable
- Damaged manifold absolute pressure (MAP) sensor.
- Damaged engine control module (ECM).
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- Poor accelerator pedal (AP) response.