Code result
P05B8
Restraint Deployment Signal Circuit Open
Moderate severity
What it means
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.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Open in signal wire
highOne of the most commonly reported causes for this code — check this first.
Pin pushed back out of connector body
lowLess common, but worth ruling out after the more likely causes.
Cracked solder joint inside the module or sensor
lowLess common, but worth ruling out after the more likely causes.
Related help
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