VOLVO
SWM-0A12 - Communication with control modules. Faulty signal
System
Steering Wheel Module (SWM)
Volvo models this fault code applies to
Applies to the following models:
5 modelsC30 (2007–2013), C30 Electric (2011–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Show models by year and engine (10)
- Volvo C30 (2007–2013)2007–2011
- Volvo C30 (2007–2013)2012All engines except: D4162T, D5204T, D5204T5
- Volvo C30 (2007–2013)2013Engine B4204S3, B4204S4, B5254T7 only
- Volvo C30 Electric (2011–2013)2011–2013
- Volvo C70 (2006–2013)2006–2011
- Volvo C70 (2006–2013)2012–2013Engine B5254T7 only
- Volvo S40 (2004–2013)2004–2010
- Volvo S40 (2004–2013)2011–2012All engines except: D4162T, D5204T, D5204T5
- Volvo V50 (2004–2013)2004–2010
- Volvo V50 (2004–2013)2011–2012All engines except: D4162T, D5204T, D5204T5
What does this fault code mean?
The steering wheel module (SWM) has detected that communication with other control modules on the CAN network is disturbed, and the signal it receives is faulty. The fault can lie in the steering wheel module or elsewhere in the network, since the central electronic module (CEM) oversees the communication.
Possible causes
- Disturbed communication involving the steering wheel module (SWM) and other control modules
What you can do
- 1Read the fault codes in all control modules, as the fault may be somewhere else in the communication network
- 2Check that the battery has normal voltage
- 3Clear the fault code and road test the car to see whether it returns
- 4If the fault remains, have a workshop check the steering wheel module (SWM), which is replaced in the event of a permanent fault
Symptoms you may notice2
- The traction control warning lamp is lit
- The stability control function does not work
What the fault can affect1
- Active yaw control (AYC) is blocked
General guidance for car owners. Diagnosis on the car can point to a different cause.