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
The control module checks the signal from the boost pressure sensor if the module has not detected a fault in the manifold absolute pressure (MAP) sensor or the mass air flow (MAF) sensor.
Diagnostic trouble code (DTC) ECM-AD is stored if the signal from the boost pressure sensor is lower than a certain limit (signal too low) when the ignition is on but the engine is not running. Diagnostic trouble code (DTC) ECM-AD is also stored if the signal from the boost pressure sensor is higher than a certain limit (signal too high) when the engine is running.
Substitute Value
No leak diagnostic.
Possible Source
Signal too low
- Contact resistance in the terminals
- Defective boost pressure sensor 1.
Signal too high
- Defective boost pressure system
- Defective boost pressure sensor 1.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.