Powertrain
generic / SAE
P05B8
Restraint Deployment Signal Circuit Open
The signal line that the restraint control module uses to inform the engine ECU about a deployment event has an open circuit. The ECU cannot run its post-crash strategy (fuel cutoff, hazard lights, unlock) automatically on impact.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number5 / B8
Possible causes
- Open in signal wire high
- Pin pushed back out of connector body low
- Cracked solder joint inside the module or sensor low
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 120–500 €
- Estimated time: 0.6–2 h
- Component: restraint control module
- Component: restraint signal wiring
- MIL / check engine light
Sources
References
sae:J2012