B00C5: Passenger Seat Track Position Restraints Sensor (Subfault)

What it means

The restraint module monitors the passenger seat’s track position sensor to determine the seat’s fore-and-aft position. It sets this code when the sensor signal or circuit is outside the module’s expected range or is missing.

At a glance

• Usually lights the airbag (SRS) or body-system warning light

How it works

The passenger seat track position sensor reports how far forward or back the seat is. The restraint control module checks its signal and sets B00C5 when that signal is missing or outside the expected range, which can affect how the system assesses the passenger seat’s position.

Common causes

Most likely first.

1. Failed seat track position sensor
2. Loose or damaged connector or wiring
3. Open or short in the sensor circuit
4. Fault in the restraint control module

Symptoms

• Warning light or symbol related to the affected system
• Comfort or safety function impaired

How to diagnose it

1. Use an SRS-capable scan tool to confirm B00C5, check for related restraint codes, and note freeze-frame data before clearing anything.
2. View passenger seat track position data while moving the seat through its normal range, if the manufacturer permits, and note whether the reading changes smoothly.
3. Inspect the track sensor, its connector, and wiring for looseness, pin damage, chafing, or trapped wires, without probing or disconnecting SRS components while powered.
4. With the system made safe according to the manufacturer’s procedure, test the sensor’s power, ground, and signal circuit for opens or shorts.
5. Compare sensor output and wiring continuity with the manufacturer’s specification to distinguish a failed sensor from a harness or connector fault.
6. If the circuit and sensor pass, check restraint-module power, ground, and relevant connectors before suspecting the module.

Common fixes

• Secure or repair a loose or damaged passenger seat track sensor connector or wire.
• Repair an open or short in the track position sensor circuit.
• Replace a failed passenger seat track position sensor if testing confirms it is faulty.
• Repair restraint-module power, ground, or connector faults found during diagnosis.
• Replace or reprogram the restraint control module only if its fault is confirmed and the manufacturer’s procedure calls for it.

Can I keep driving?

The vehicle may remain driveable, but the passenger restraint system may not account correctly for seat position in a crash. Avoid moving or disturbing wiring under the seat, and have the SRS fault diagnosed promptly; do not assume the passenger airbag will operate as intended.