Passenger Seat Belt Warning Lamp Circuit
The B0266 code means the vehicle's onboard diagnostic system has detected: Passenger Seat Belt Warning Lamp Circuit. This is a low severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- moderate
- Estimated cost
- $50 - $400 (parts and labor)
Basic scanners skip body codes entirely. BlueDriver reads airbag, HVAC, lighting, and BCM codes through your phone.
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Common Symptoms
- Passenger seat belt warning active
- Seat belt chime sounds incorrectly
- Passenger belt retractor not locking
- Dashboard restraint indicator on
Probable Causes (Ranked by Likelihood)
- Faulty passenger seat belt buckle switch Very High
- Damaged passenger belt wiring High
- BCM seat belt input fault Moderate
- Instrument cluster warning circuit issue Low
Step-by-Step Diagnostic Procedure
-
Test passenger seat belt buckle switch
-
Inspect passenger belt wiring harness
-
Check BCM seat belt inputs with scan tool
-
Verify warning lamp circuit
Frequently Asked Questions
Why does my seat belt chime keep going off?
A faulty buckle switch may incorrectly report the belt as unbuckled, triggering the warning chime.
Can I disable the seat belt warning?
It is not recommended. The warning system is a safety feature. Repair the underlying fault instead.
How much does a buckle switch cost?
Seat belt buckle switches typically cost $20-$60 for the part, with $50-$150 in labor.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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