Diagnostic trouble code (DTC) information
WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.
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.