Passenger Side Seat Belt Sensor Circuit Failure
This code indicates a malfunction in the passenger side seat belt sensor circuit.
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 seat belt sensor detects if the passenger's seat belt is buckled or not. If it has a problem, the system can’t tell if the seat belt is secure.
What the computer is actually seeing
The body control module (BCM) sees either an open or short in the circuit for the passenger seat belt sensor, indicating a failure in the expected input signal.
What a healthy reading looks like
The voltage at the seat belt sensor should be around 0.5V when unbuckled and around 5V when buckled. Resistance should be close to 0 ohms when connected.
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 wiring and connectors for damage or corrosion; repair as necessary. Decision: Is the wiring intact?
- 22. Measure voltage at the seat belt sensor connector with the key on; should be 0.5V (unbuckled) or 5V (buckled). Decision: Are readings within expected range?
- 33. If readings are not correct, swap the seat belt sensor with a known good one. Decision: Does the code clear or return?
- 44. If the code returns, test the body control module for faults. Decision: Is the BCM functioning properly?
Common causes
- Damaged wiring between the sensor and BCM
- Faulty seat belt sensor
- Corroded connectors
- Defective BCM
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code active?
It's moderate severity; you can drive but should fix it soon for safety.
Will the code come back after clearing?
If the underlying issue is not fixed, yes, the code will likely return.
Why does this code pair with B0030?
B0030 indicates a similar issue but for the driver's side; both can have related wiring issues.
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