Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information

Condition




Diagnostic trouble code (DTC) ECM-2E is stored if the control module detects that a too high or too low air mass is forced into the engine. This is interpreted as too high or too low boost pressure.

Substitute value
- No idle air trim adaptation
- No engine speed (RPM) limitation
- The boost pressure control (BPC) diagnostic is disabled.

Possible source

Signal too low:
- The boost pressure control (BPC) valve has stuck in the open position
- Air leakage in the charge air pipe or intake manifold
- Defective turbocharger (TC)
- Defective mass air flow (MAF) sensor.

Signal too high:
- The boost pressure control (BPC) valve has stuck in the closed position
- Leakage in the hoses for the boost pressure control (BPC) pressure regulator
- Defective boost pressure control (BPC) valve pressure regulator
- Defective mass air flow (MAF) sensor.

Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- Deterioration in performance
- Improved performance
- High idling speed
- Low idling speed.