VOLVO
SRS-B00791A - Driver Seatbelt Pretensioner "B" Deployment Control (Subfault). General Electrical Failures. Circuit resistance below threshold
System
Supplemental Restraint System (SRS)
Volvo models this fault code applies to
Applies to the following models:
7 modelsS60 (2011–), S80 (2007–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)
What does this fault code mean?
The fault is sub-fault B of the driver's lap seat belt pretensioner. The airbag control module measures the resistance in the circuit and stores the code when it is too low. The causes are short-circuited wires and connections, or a short circuit in the pretensioner itself.
Possible causes
- The wires are short-circuited.
- Short circuit in the connections.
- Short circuit in the driver's lap pretensioner, in its igniter part.
What you can do
- 1Read out the fault code and clear it. If it comes back, the fault is still present.
- 2Have a workshop check the connectors at the control module and at the lap pretensioner for looseness and oxidation.
- 3Have a workshop check the wire to the pretensioner for a short circuit to other wires in the circuit.
- 4If the fault is still present once the wiring has been checked, have a workshop replace the driver's lap pretensioner.
- 5Do not work on seat belt pretensioners or the airbag system yourself; have a workshop carry out the checks.
Symptoms you may notice2
- SRS warning light on
- SRS warning message shown in the display
General guidance for car owners. Diagnosis on the car can point to a different cause.