OBD-II code · Body
B0077 Driver Seatbelt Pretensioner Resistance High
The driver seatbelt pretensioner loop resistance is above the expected window. The pretensioner may not fire reliably.
Is it safe to drive with B0077?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyCorroded pretensioner connector
Symptoms
- Warning light or symbol related to the affected system
- Comfort or safety function impaired
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.8–2.5 h
- Emissions test
- Usually unaffected
- Parts involved
- Driver Seatbelt Pretensioner, Srs Seat Wiring
Related codes
- B0074Driver Seatbelt Pretensioner Loop Short to Battery
- B0075Second Row Right Seat Belt Pretensioner Deployment Control
- B0076Driver Seatbelt Pretensioner Resistance Low
- B0078Third Row Right Seat Belt Pretensioner Deployment Control
- B0079Driver Seat Belt Pretensioner B Deployment Control
- B007APassenger Seat Belt Pretensioner B Deployment Control
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.