VOLVO
SAS-0020 - Steering wheel angle sensor signal A/B/IX/IY. Signal faulty. Permanent fault
System
Steering Angle Sensor (SAS)
Volvo models this fault code applies to
This fault code has different meanings depending on model, model year or engine. Select the meaning that applies to your car.
Applies to the following models:
4 modelsS80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Show models by year and engine (4)
What does this fault code mean?
Signals A, B, IX and IY from the sensor are faulty, and the fault is permanent: it is present now. It originates in the sensor or its control module, and may be due to poor contact or a broken wire.
Possible causes
- Fault within the sensor itself
- Fault within the sensor's control module
What you can do
- 1Read and note the code, clear it and road test to see whether it returns straight away
- 2Check the connectors at the sensor control module and the steering wheel module for oxide and contact resistance
- 3With diagnostic equipment, watch signals A, B, IX and IY while turning the wheel to each end stop; switching OFF/ON points to poor contact or oxide
- 4Check the wiring between the control module and the sensor for short circuits between the wires and for breaks
- 5If no wiring fault is found, a workshop may need to replace the steering wheel angle sensor
- 6Stability control is off while the fault is present, so have a workshop repair it promptly
Symptoms you may notice3
- Anti-spin warning lamp is on
- Stability function absent
- Anti-spin does not work
What the fault can affect2
- Stability control disconnected
- Anti-spin function blocked
General guidance for car owners. Diagnosis on the car can point to a different cause.