B2477
Module Configuration Failure
Severity
🔴 HighCan you drive?
Do not drive — repair immediately
Approx. repair cost
$56–167 (est.)
Symptoms
- Airbag light is on
- Restraint system disabled
- The error does not disappear after a scanner reset
Causes
- Incorrect SRS module firmware
- Module replacement without reprogramming
- Damage to the restraint system wiring harness
- Corrosion or poor contact in connectors
- SRS module power failure
How to Fix
- Diagnostics with a scanner to accurately identify the module with an error
- Checking the integrity of the wiring harness and contacts
- Flashing or reconfiguring the SRS module
- Replacing the module if necessary
- Resetting errors and checking system operation