B1B2C
1st Row Passenger Seat Belt Pretensioner Circuit Low
B1B2C is an OBD-II diagnostic trouble code meaning: 1st Row Passenger Seat Belt Pretensioner Circuit Low. Common causes: short circuit in pretensioner circuit, broken or damaged wiring harness. Estimated repair cost: $56–167.
Symptoms
- SRS/Airbag light is on
- The SRS system may turn off
- Security error message on dashboard
Causes
- Short circuit in pretensioner circuit
- Broken or damaged wiring harness
- Incorrect squib resistance
- Faulty belt pretensioner
- Corrosion or oxidation of contacts in connectors
- Problems with the SRS control unit (rare)
How to Fix
- Visually inspect the wiring harness and connectors for damage
- Checking the resistance of the pretensioner circuit (should be within 1.5-3 Ohms)
- Diagnostics of the state of contacts in connectors
- Replacing the pretensioner if necessary
- Resetting the error by the scanner after repair
Related codes
FAQ
What does the B1B2C code mean?
B1B2C is an OBD-II diagnostic trouble code that indicates: 1st Row Passenger Seat Belt Pretensioner Circuit Low
What causes a B1B2C error code?
The most common causes of B1B2C include: Short circuit in pretensioner circuit; Broken or damaged wiring harness; Incorrect squib resistance; Faulty belt pretensioner.
How do I fix a B1B2C diagnostic trouble code?
To fix B1B2C: Visually inspect the wiring harness and connectors for damage. Checking the resistance of the pretensioner circuit (should be within 1.5-3 Ohms). Diagnostics of the state of contacts in connectors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B1B2C?
Do not drive — repair immediately
How much does it cost to fix B1B2C?
The estimated repair cost for B1B2C is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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