VOLVO
BCM-A031 - Communication between control modules. Steering angle sensor. Tolerance check not run
System
Brake Control Module (BCM)
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:
5 modelsS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Show models by year and engine (11)
- Volvo S60 (2001–2009)2002–2009
- Volvo S80 (1999–2006)2002–2006
- Volvo V70 (2000–2008)2002–2008
- Volvo V70 XC / XC70 (2001–2007)2002–2007
- Volvo XC90 (2003–)2003–2004, 2015
- Volvo XC90 (2003–)2005–2006All engines except: B8444S
- Volvo XC90 (2003–)2007Engine B5254T2, D5244T4 only
- Volvo XC90 (2003–)2008–2010All engines except: B6324S, B8444S
- Volvo XC90 (2003–)2011All engines except: B6324S5, B8444S
- Volvo XC90 (2003–)2012All engines except: B6324S5
- Volvo XC90 (2003–)2013–2014Engine B5254T9 only
What does this fault code mean?
After the steering angle sensor has been initialised, a plausibility check of the steering angle is carried out. The code is set if the check is not passed while the car is driven above a certain speed. The check may finish after the code has been set, but before the ignition is switched off.
Possible causes
- Plausibility check of the steering angle has not been passed
What you can do
- 1Drive the car so that the check can finish, then clear the code and check whether it returns
- 2If the fault remains, have a workshop check the plausibility of the steering angle sensor and the wheel alignment
- 3The brake system is safety critical: do not replace the brake control module for this code, and drive carefully until the fault is fixed
Symptoms you may notice3
- Anti-spin warning lamp on
- General warning lamp on
- Anti-skid does not work
What the fault can affect1
- Active yaw control (AYC) is disabled
General guidance for car owners. Diagnosis on the car can point to a different cause.