B1B55
1st Row Passenger Seat Belt Sensor Circuit High
B1B55 is an OBD-II diagnostic trouble code meaning: 1st Row Passenger Seat Belt Sensor Circuit High. Common causes: short circuit in the seat belt sensor circuit, seat belt sensor malfunction. Estimated repair cost: $56–167.
Symptoms
- The passive safety system fault indicator is on
- The passive safety system may not work in the event of an accident.
- The error may appear even when the seat belt is fastened
Causes
- Short circuit in the seat belt sensor circuit
- Seat belt sensor malfunction
- Wiring harness damage
- Problems with contacts in connectors
- Restraint module malfunction
How to Fix
- Check the integrity of the wiring harness and connectors
- Check the resistance of the seat belt sensor
- Check the voltage in the sensor circuit
- Replace the seat belt sensor if necessary
- Clean or replace connectors if corroded
- Check and, if necessary, replace the passive safety system module
Related codes
FAQ
What does the B1B55 code mean?
B1B55 is an OBD-II diagnostic trouble code that indicates: 1st Row Passenger Seat Belt Sensor Circuit High
What causes a B1B55 error code?
The most common causes of B1B55 include: Short circuit in the seat belt sensor circuit; Seat belt sensor malfunction; Wiring harness damage; Problems with contacts in connectors.
How do I fix a B1B55 diagnostic trouble code?
To fix B1B55: Check the integrity of the wiring harness and connectors. Check the resistance of the seat belt sensor. Check the voltage in the sensor circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B1B55?
Limited driving only, diagnose soon
How much does it cost to fix B1B55?
The estimated repair cost for B1B55 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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