Faulty signal. Intermittent fault: Check
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.
- Ignition off.
Check the connectors on the camshaft reset valve, control module and camshaft position (CMP) sensor. Check for contact resistance and oxidation according to Contact resistance and oxidation .
Check the engine oil quality, check for contaminants in particular.
Replace the engine oil if necessary.
Check the engine oil pressure for low oil pressure.
Remove the camshaft reset valve.
Check the oil ducts for the camshaft reset valve and camshaft pulley in the cylinder head for blockages.
Remedy as necessary.
Other information:
- To check the oil pressure, see Oil pressure: Inspecting and replacing the oil pressure sensor
- To access the control module, see Engine control module (ECM), replacing
- To access or replace the camshaft reset valve, see Replacing the variable valve timing (VVT) control valve .
- Continue
Refer to Information