Checking the signals for the boost pressure sensors
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 on
- Read off the values for the boost pressure sensors.
Check that the values for the boost pressure sensors are within their permitted ranges. The reading must be approximately 1000 mbar. The values vary with conditions dependent on the atmospheric pressure.
Compare the value between boost pressure sensor 1 and boost pressure sensor 2 to an accuracy of 100 mbar. There may be a fault if the values differ by more than 100 mbar.
HINT: Check the connectors for the boost pressure sensors. Check for contact resistance and oxidation according to Contact resistance and oxidation .
Remedy as necessary
Other information
- For the location of the boost pressure sensors, see Engine compartment .