Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information ECM-140A

Condition




The engine control module (ECM) measures the pressure in the intake manifold using a sensor.
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that the sensor value deviates too much from a calculated model.
The diagnostic trouble code (DTC) is diagnosed at a fixed engine speed above 1100 rpm and with the engine at operating temperature (>70 °C).

Substitute value
- Value from the mass air flow (MAF) sensor is used.

Possible source
- Contact resistance in the connector
- Defective hose connector
- Damaged manifold absolute pressure (MAP) sensor.

Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- Poor accelerator pedal (AP) response.