Airbag Crash Sensor Circuit Malfunction
There's a problem with the airbag crash sensor circuit.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The crash sensor is supposed to detect a collision; it sends a signal to deploy the airbags. If there's a problem with the sensor or its wiring, the airbag system won't work when it should.
What the computer is actually seeing
The computer monitors the crash sensor circuit for voltage levels typically around 5 volts. A malfunction can cause the voltage to drop below 1 volt or remain above 4.5 volts when the car is off.
What a healthy reading looks like
Expected voltage on the crash sensor circuit is around 5 volts at the connector.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 1Check airbag system fuse for continuity.
- 2Inspect wiring and connectors for any visible damage or corrosion.
- 3Measure voltage at the crash sensor connector with the ignition on; should be around 5 volts.
- 4If it's below 1 volt or above 4.5 volts, check wiring continuity to the ECU.
- 5If wiring is good, swap the crash sensor with a known good one and clear codes to see if fault returns.
Common causes
- Faulty crash sensor
- Broken/worn wiring in the sensor circuit
- Poor connection at the sensor connector
- Faulty ECU (Engine Control Unit)
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
You may be at risk in a collision since airbags may not deploy; fix it soon.
Will this code come back after I reset it?
Yes, if the underlying issue isn't fixed, it will likely return.
Why does this code appear along with other airbag codes?
Airbag systems are interconnected; a fault in one component can trigger multiple codes.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
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