Passenger Seat Belt Sensor Fault
The passenger seat belt indicator is malfunctioning or detected a fault.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The car's computer is checking if the passenger's seat belt is buckled by sending a small voltage through a sensor in the buckle; if it doesn’t sense the expected signal when the seat belt is buckled, it thinks there’s a problem.
What the computer is actually seeing
The ECM expects a certain resistance from the seat belt sensor circuit when the seat belt is engaged—typically, it should read less than 5 ohms. If the resistance is too high or there’s no signal, the code triggers.
What a healthy reading looks like
Resistance should be between 0.5 to 5 ohms when buckled.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Inspect the seat belt connector for corrosion or damage. If damaged, repair or replace it. Decision Point: If corrosion is found, fix and retest. If no visible issues, move to step 2.
- 22. Check the wiring between the seat belt sensor and the BCM for continuity. Use a multimeter to ensure there are no breaks in the wire. Decision Point: If wiring is damaged, repair it. If wiring is intact, move to step 3.
- 33. Test the resistance of the seat belt buckle sensor with a multimeter. Verify the readings are within expected values. Decision Point: If readings are out of range, replace the seat belt buckle sensor. If readings are normal, proceed to step 4.
- 44. Inspect the Body Control Module (BCM) for any stored codes or faults. Test the BCM if necessary. Decision Point: If BCM is faulty, consider replacement.
Common causes
- Corroded or damaged connector at the seat belt buckle
- Faulty seat belt buckle sensor
- Wiring issue in the seat belt sensor circuit
- Faulty Body Control Module (BCM)
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It’s safe to drive, but it’s recommended to fix it soon, especially for passenger safety.
Will this code come back after clearing it?
Yes, if the underlying issue isn't fixed, the code will likely return.
Why does this code pair with other codes?
Codes can be related due to shared wiring or faulty components affecting multiple systems.
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