VOLVO
ABS-00B3 - Communication control unit SAS signal. Unreasonable signal
System
Anti-lock Braking System (ABS)
Volvo models this fault code applies to
Applies to the following models:
4 modelsS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007)
Show models by year and engine (4)
What does this fault code mean?
The steering angle sensor module (SAS) transmits a signal over the car's data network, and the ABS module compares it with the yaw-velocity sensor signal. If the ABS module finds that the steering angle signal is unreasonable, the code is set. This code applies only to cars with stability control, and while it is present anti-spin and stability are blocked.
Possible causes
- Incorrect front wheel alignment
- Incorrectly fitted steering wheel angle sensor
What you can do
- 1Check the connectors at the ABS module, the steering angle sensor control unit and the steering wheel for contact resistance and oxidation
- 2Read the steering angle with diagnostic equipment and check that it updates when the wheel is turned to full lock in both directions
- 3Check that the steering angle sensor and its communication wiring are not routed near electric motors or phone wiring
- 4Remedy as necessary and clear the code
- 5If the fault remains, have a workshop check the front wheel alignment and calibrate the stability system where needed
- 6ABS, stability control and the steering angle sensor are safety-critical – do not work on steering or the brake system yourself, have a workshop do it
Symptoms you may notice3
- Anti-spin does not work
- Stability function is absent
- Anti-spin warning lamp lit
What the fault can affect2
- Anti-spin function is blocked
- Stability function is blocked
General guidance for car owners. Diagnosis on the car can point to a different cause.