B1C40
1st Driver Seat Belt Buckle Tensioner Circuit Shorted Together
B1C40 is an OBD-II diagnostic trouble code meaning: 1st Driver Seat Belt Buckle Tensioner Circuit Shorted Together. Common causes: pretensioner circuit wiring harness damage, short circuit in pretensioner solenoid. Estimated repair cost: $56–167.
Symptoms
- Airbag light is on
- Malfunction of the seat belt pretensioner system
- Error B1C40 in the diagnostic scanner memory
Causes
- Pretensioner circuit wiring harness damage
- Short circuit in pretensioner solenoid
- Problems with the SRS control unit
- Corrosion of contacts in system connectors
How to Fix
- Diagnose the SRS system with a scanner
- Check the integrity of the pretensioner circuit wiring harness
- Check the resistance and integrity of the pretensioner solenoid
- Inspect connectors and contacts for corrosion
- Replace damaged components if necessary
- Reset SRS system errors
Related codes
FAQ
What does the B1C40 code mean?
B1C40 is an OBD-II diagnostic trouble code that indicates: 1st Driver Seat Belt Buckle Tensioner Circuit Shorted Together
What causes a B1C40 error code?
The most common causes of B1C40 include: Pretensioner circuit wiring harness damage; Short circuit in pretensioner solenoid; Problems with the SRS control unit; Corrosion of contacts in system connectors.
How do I fix a B1C40 diagnostic trouble code?
To fix B1C40: Diagnose the SRS system with a scanner. Check the integrity of the pretensioner circuit wiring harness. Check the resistance and integrity of the pretensioner solenoid. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B1C40?
Do not drive — repair immediately
How much does it cost to fix B1C40?
The estimated repair cost for B1C40 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat