What Does B00B6 Mean?
This code indicates that the Body Control Module (BCM) has detected a fault in the driver seat recline position sensor circuit that communicates with the restraint system (airbag/SRS). The sensor monitors the angle of the seat back to optimize airbag deployment parameters. A subfault designation suggests an intermittent signal, out-of-range value, or communication error between the seat position sensor and the restraint control module.
Common Causes
40%
Faulty driver seat recline position sensor or potentiometer
30%
Damaged wiring harness or corroded connector at seat base or under seat tracks
20%
Mechanical binding or damage to seat recline mechanism affecting sensor operation
10%
BCM or restraint control module software fault or internal fault
Diagnostic Steps
1
Step 1: Perform visual inspection of driver seat wiring harness under the seat, checking for pinched wires from seat track movement, loose connectors, corrosion at terminals, and damaged insulation. Check ground connections at seat frame.
2
Step 2: Using a multimeter, test the seat recline position sensor supply voltage (typically 5V reference) and ground circuit with ignition on. Verify voltage is within specification at the sensor connector.
3
Step 3: Monitor live data stream for seat position sensor values while manually reclining the seat through its full range of motion. Sensor output should change smoothly and proportionally (typically 0.5V to 4.5V or resistance change). Note any erratic readings, dropouts, or stuck values.
4
Step 4: Inspect the seat recline mechanism for binding, broken mounting brackets, or physical damage that could affect sensor alignment or operation. Verify sensor is securely mounted and not cracked or damaged.
5
Step 5: If wiring and sensor output are normal, perform bidirectional control tests (if available) to command seat functions and verify BCM communication with seat module. Check for BCM software updates or TSBs related to seat position sensor calibration.
6
Step 6: Clear codes and road test vehicle with multiple seat recline adjustments to verify repair. Monitor for code recurrence and confirm proper restraint system operation through scan tool data.
Estimated Repair Cost
$150 - $650
Parts + labor, varies by vehicle and location
This code indicates that the Body Control Module (BCM) has detected a fault in the driver seat recline position sensor circuit that communicates with the restraint system (airbag/SRS). The sensor monitors the angle of the seat back to optimize airbag deployment parameters. A subfault designation sug...
The most common cause of B00B6 (Driver Seat Recline Position Restraints Sensor (Subfault)) is: Faulty driver seat recline position sensor or potentiometer
Typical repair costs for B00B6 range from $150 to $650, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle is generally safe to drive, but airbag deployment parameters may not be optimized for seat position, potentially affecting occupant protection in a collision. Repair should be completed promptly to ensure full restraint system functionality.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B00B6 to identify the root cause.
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Quick Info
Category
Body
System
Restraint System / Seat Control System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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