Intermittent internal faults
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.
Intermittent internal faults could be due to:
- Electromechanical interference
- Power supply too low
- Oxidized ground terminal for the control module
- Defective internal components.