Checking the wiring and component
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 front heated oxygen sensor (HO2S) connector for contact resistance and oxidation according to Contact resistance and oxidation
.
Check the cable between control module terminal #63 and front heated oxygen sensor (HO2S) connector terminal #2. Check for a short-circuit to ground according to Short-circuit to ground, permanent faults .
Check the cable between fuse 18 in the integrated relay / fusebox in the engine compartment and front heated oxygen sensor (HO2S) terminal #1. Check for an open-circuit according to Open-circuit, permanent faults .
Try a new front heated oxygen sensor (HO2S) if no fault is found during the above fault-tracing.
Remedy as necessary.
Other information
- To connect the breakout box and access the control module, see Connecting the breakout box. EMS 2000
- To access or replace the front heated oxygen sensor (HO2S), see Replace the front heated oxygen sensor (HO2S)
- For information about signals see Signal specification .
Courtesy of VOLVO CARS OF NORTH AMERICA.
- Continue
Refer to Verification