VOLVO
SRS-B00791B - Driver Seatbelt Pretensioner "B" Deployment Control (Subfault). General Electrical Failures. Circuit resistance above 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 and is stored when the resistance in the circuit is too high. The causes may be a break in the wire, contact resistance or oxidation in the connections, or a break in the pretensioner.
Possible causes
- Break in the wire.
- Contact resistance or oxidation in the connections.
- Break 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 contact resistance and oxidation.
- 3Have a workshop check the wire to the pretensioner for a break.
- 4Have a workshop replace the driver's lap pretensioner if the wire and connectors are intact.
- 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.