What it means
The restraint module monitors the audible indicator used to alert occupants to a restraint-system malfunction. It sets this code when the sounder circuit or response does not meet the module’s expected criteria.
At a glance
- Usually lights the airbag (SRS) or body-system warning light
How it works
The restraint control module monitors the audible sounder that alerts occupants to a restraint-system malfunction. This code sets when the sounder circuit or its response does not meet the module’s expected criteria, so an airbag or restraint warning may be shown without its usual audible alert.
Common causes
Most likely first.
- Failed chime or sounder
- Open or short in sounder wiring
- Loose or corroded connector
- Fault in the restraint control module
Symptoms
- Warning light or symbol related to the affected system
- Comfort or safety function impaired
How to diagnose it
- Scan the restraint module for related codes and freeze-frame or event data to identify when the audible indicator fault was recorded.
- Check whether the restraint warning chime or sounder operates during the vehicle’s normal ignition self-check or when a restraint warning is displayed.
- Inspect the sounder and accessible wiring and connectors for damage, looseness, or corrosion.
- Test the sounder circuit for an open or short using vehicle wiring information and compare readings with the manufacturer’s specification.
- If the sounder and wiring pass, verify the restraint module’s sounder command and output using the manufacturer’s diagnostic procedure.
Common fixes
- Secure or clean a loose or corroded sounder connector.
- Repair damaged wiring or an open or short in the sounder circuit.
- Replace the failed chime or sounder.
- Repair or replace the restraint control module if its sounder output is confirmed faulty.
Can I keep driving?
A restraint-system fault may not produce its audible alert, even if a warning appears on the display. Drive cautiously and have the warning system checked promptly.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.