B1B51
1st Row Driver Seat Belt Sensor Circuit High
B1B51 is an OBD-II diagnostic trouble code meaning: 1st Row Driver Seat Belt Sensor Circuit High. Common causes: broken seat belt sensor wire, short circuit to ground/power. Estimated repair cost: $22–111.
Symptoms
- Airbag light is on
- The SRS system may not work in an accident.
- No audible/visual seat belt reminder
Causes
- Broken seat belt sensor wire
- Short circuit to ground/power
- Oxidation of connector contacts
- Belt sensor malfunction
- Damage to the wiring harness (chafing)
- Problems with the SRS control unit
How to Fix
- Visual inspection of the wiring harness in the driver's seat area (for chafing, damage)
- Checking the contacts of the belt sensor connector
- Testing the sensor circuit with a multimeter
- Checking the sensor resistance (compare with the norm)
- Replace the sensor if necessary
- Repair/replacement of damaged wires
- Resetting the error by the scanner after repair
- Checking the operation of the system (fastening the seat belt - the signal must inevitably change)
Related codes
FAQ
What does the B1B51 code mean?
B1B51 is an OBD-II diagnostic trouble code that indicates: 1st Row Driver Seat Belt Sensor Circuit High
What causes a B1B51 error code?
The most common causes of B1B51 include: Broken seat belt sensor wire; Short circuit to ground/power; Oxidation of connector contacts; Belt sensor malfunction.
How do I fix a B1B51 diagnostic trouble code?
To fix B1B51: Visual inspection of the wiring harness in the driver's seat area (for chafing, damage). Checking the contacts of the belt sensor connector. Testing the sensor circuit with a multimeter. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B1B51?
Limited driving only, diagnose soon
How much does it cost to fix B1B51?
The estimated repair cost for B1B51 is $22–111. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat