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-41 is stored if the engine speed (RPM) signal exceeds 3,500 RPM, the load exceeds 250 mg/stroke and the signal from the knock sensor (KS) is missing.
Substitute Value
- Initial boost pressure
- Retarded ignition.
Possible Source
- Open-circuit in the signal cable
- Short-circuit to ground in signal cable
- Short-circuit to supply voltage in the signal cable
- Faulty knock sensor (KS).
Fault symptom[s]
- Poor performance.