VOLVO
SRS-B000412 - Driver´s Knee Airbag Deployment Control. General Electrical Failures. Circuit short to battery
System
Supplemental Restraint System (SRS)
Volvo models this fault code applies to
Applies to the following models:
2 modelsV40 (2013–), V40 Cross Country (2013–)
Show models by year and engine (2)
What does this fault code mean?
The SRS checks the DC voltage in the driver's side knee airbag circuit. Voltage above the limit for too long points to a short to supply voltage.
Possible causes
- Wire shorted to supply voltage
- Short-circuit inside the connectors
What you can do
- 1Read and clear the code, drive the car and see whether it comes back
- 2Have a workshop check the connections visually and for contact resistance and oxidation, and the wire for a short to supply voltage
- 3If the wire has no fault, have a workshop replace the driver's side knee airbag
- 4The battery must be disconnected before the airbag system is touched, or the airbag could deploy by mistake; leave this to a workshop
Symptoms you may notice2
- Yellow warning symbol and text message in the display
- SRS indicator lamp lit or behaving abnormally
General guidance for car owners. Diagnosis on the car can point to a different cause.