B0064Driver Seat Belt Pretensioner Deployment Loop Resistance Low
- Generic OBD-II code · Body
- How the car detects it
- No publicly available J2012 code list includes B0064; there, B0060 names the driver belt tension sensor. Older airbag modules from General Motors do use it: on the 2006 Saab 9-5, B0064 is set when the resistance of the driver pretensioner loop stays below 1.5 ohms, with a 0.2-ohm tolerance, for 2 seconds; B0065 marks an interrupted loop and B0066 a voltage at pin 34 outside 1.0 to 4.1 V. Saab 9-3 manuals of 2003 and 2007 describe the same fault as too little resistance at the driver's belt tensioner. The module still attempts to fire the pretensioner in a crash. GM bulletin 14609 names B0064 among the codes caused by fatigue breaks in the rear door harness of Colorado and Canyon extended cab trucks, model years 2004 to 2009. Airbag lamp on.
- What you may notice
- Airbag warning lamp on
- Driver belt pretensioner may not work properly in a crash
- Safety note: pretensioner plugs sit at the B-pillar or under the seat; do not probe the loop and only unplug them with the battery disconnected and the wait time observed
- Likely causes
- LikelyPretensioner leads shorted together, e.g. squashed harness at the B-pillar
- PossibleColorado/Canyon extended cab: fatigued wires in the rear door harness (bulletin 14609)
- PossibleDamaged or contaminated pretensioner connector
- RareInternal fault of the driver pretensioner squib
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €100 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.