B177B
Roof Status Incorrect
B177B is an OBD-II diagnostic trouble code meaning: Roof Status Incorrect. Common causes: open or short circuit in wiring harness, oxidation of curtain air curtain connector contacts. Estimated repair cost: ~$1.
Symptoms
- Airbag light comes on
- Diagnostic memory error (B177B)
- Restraint system inactive
Causes
- Open or short circuit in wiring harness
- Oxidation of curtain air curtain connector contacts
- Mechanical damage to the curtain airbag
- Restraint controller malfunction
How to Fix
- Diagnostics of the passive safety system with a scanner
- Checking the integrity of the wiring harness
- Checking and cleaning connector contacts
- Replacing the side curtain airbag if necessary
- Replacing the controller (if a confirmed malfunction)
Related codes
FAQ
What does the B177B code mean?
B177B is an OBD-II diagnostic trouble code that indicates: Roof Status Incorrect
What causes a B177B error code?
The most common causes of B177B include: Open or short circuit in wiring harness; Oxidation of curtain air curtain connector contacts; Mechanical damage to the curtain airbag; Restraint controller malfunction.
How do I fix a B177B diagnostic trouble code?
To fix B177B: Diagnostics of the passive safety system with a scanner. Checking the integrity of the wiring harness. Checking and cleaning connector contacts. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B177B?
Limited driving only, diagnose soon
How much does it cost to fix B177B?
The estimated repair cost for B177B is ~$1. Actual cost depends on your vehicle, location, and labor rates.
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