What it means
The control module detected an open in the restraint deployment signal circuit. The code identifies a fault in that signal circuit; it does not establish what post-crash actions the vehicle will take.
At a glance
- Usually lights the check-engine light
How it works
The restraint deployment signal circuit carries a signal monitored by the vehicle's restraint control system. This code sets when the module detects that the circuit is open, interrupting the expected signal; it does not by itself identify which restraint component is affected.
Common causes
Most likely first.
- Open in signal wire
- Pin pushed back out of connector body
- Cracked solder joint inside the module or sensor
Symptoms
- Airbag or restraint warning light
- A restraint system fault message may appear
- Restraint system operation may be affected
How to diagnose it
- Read the restraint system's stored codes and freeze-frame or event data with a scan tool capable of accessing that module.
- Use the vehicle's wiring information to identify the affected deployment signal circuit before inspecting it.
- Inspect accessible connectors and wiring on that circuit for damage, a loose connection, or a terminal pushed back in its housing.
- Test the circuit for continuity using the manufacturer's procedure, with the restraint system made safe as specified by the manufacturer.
- If the external wiring is intact, test the connected restraint component and control module for an internal open.
Common fixes
- Restore a loose connector or correctly seat a pushed-back terminal using the manufacturer's restraint-system procedure.
- Repair an open signal wire using an approved restraint-system repair method.
- Replace a failed restraint component if testing identifies it as the source of the open.
- Repair or replace a control module only after its internal fault is confirmed.
Can I keep driving?
The restraint warning means airbag or other restraint protection may be reduced or unavailable in a crash. Arrange prompt diagnosis and avoid disturbing restraint wiring; use a qualified technician if the circuit's safe handling procedure is unknown.
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.