Faulty passenger seat track position sensor; Damaged or chafed wiring harness under the seat; Loose or corroded electrical connector at the sensor or module; Seat track mechanism binding or damaged, causing sensor misalignment; Failed restraints control module (less common); Aftermarket seat covers or accessories interfering with sensor movement

DTC codes / B00xx · Airbags, seats, doors, lights and comfort systems / B00C5

B00C5Passenger Seat Track Position Restraints Sensor

Q: What does code B00C5 mean?

Passenger Seat Track Position Restraints Sensor. B00C5 indicates that the restraints control module has detected a fault in the passenger seat track position sensor circuit, which is used to determine how far forward or rearward the passenger seat is positioned. The module monitors the sensor's signal voltage and sets this code when the voltage falls outside the expected range or the circuit is open or shorted.

B00C5 indicates that the restraints control module has detected a fault in the passenger seat track position sensor circuit, which is used to determine how far forward or rearward the passenger seat is positioned. The module monitors the sensor's signal voltage and sets this code when the voltage falls outside the expected range or the circuit is open or shorted.

SystemBody

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaAirbags, seats, doors, lights and comfort systems

Symptoms you may notice

Airbag warning light illuminated on the instrument cluster
Passenger airbag may be automatically disabled even when the seat is occupied
Seat position memory or easy-entry feature may not function correctly
Intermittent warning light that comes and goes over bumps or when adjusting the seat
Often no symptoms besides the warning light, with no noticeable change in vehicle operation

Common causes, most likely first

Faulty passenger seat track position sensor
Damaged or chafed wiring harness under the seat
Loose or corroded electrical connector at the sensor or module
Seat track mechanism binding or damaged, causing sensor misalignment
Failed restraints control module (less common)
Aftermarket seat covers or accessories interfering with sensor movement

How to diagnose and fix it

Inspect the under-seat wiring and connectors for damage, corrosion, or loose pins
Check the sensor mounting and seat track for physical damage or binding
Measure sensor resistance or voltage with a multimeter and compare to manufacturer specifications
Perform a wiggle test on the harness while monitoring live data to identify intermittent faults
Replace the seat track position sensor if it fails electrical testing
Repair or replace damaged wiring and connectors as needed
Clear the code and verify the repair with a scan tool and test drive

Seat position sensor faults often misdiagnosed

A seat track position sensor that is simply unplugged or has a loose connector can set B00C5, so always check connector seating before replacing parts.
The sensor is often part of the seat track assembly and may not be available separately, requiring replacement of the entire track on some vehicles.
Aftermarket seat covers or objects lodged under the seat can prevent the sensor from moving through its full range, triggering the code.
The restraints control module may set this code if battery voltage is low during cranking, so check for other low-voltage codes before condemning the sensor.
This code does not always mean the airbag system is disabled; the module may still deploy the passenger airbag based on other inputs, but the warning light will remain on.

Can I keep driving with B00C5?

The vehicle is safe to drive, but the passenger airbag may not deploy correctly in a crash if the seat position is not detected. Avoid carrying passengers in the front seat until the fault is repaired, and have the system diagnosed promptly.

Tools that help

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Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.