Passenger Airbag Sensor Short to Ground
Passenger airbag sensor circuit has a short to ground.
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What it means (plain English)
The passenger airbag sensor is wired incorrectly or the sensor itself is damaged, causing it to mistakenly think it's always in a shorted state, which disables the airbag system for safety.
What the computer is actually seeing
The airbag control module sees a constant low voltage (close to 0 volts) when it checks the passenger airbag sensor circuit, indicating a short to ground condition rather than the expected resistance readings.
What a healthy reading looks like
Expected voltage on the airbag sensor circuit should be around 2.5 to 4.5 volts when functional; anything below 2 volts may indicate a short to ground.
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.
- 11. Inspect the wiring and connector for the passenger airbag sensor for visible damage or corrosion.
- 22. Use a multimeter to check the voltage at the airbag sensor connector; you should see around 2.5 to 4.5 volts.
- 33. If voltage is significantly lower (below 2 volts), inspect the wiring for shorts to ground or broken wires.
- 44. If wiring is intact, test the resistance of the passenger airbag sensor itself as per manufacturer specifications; usually in the range of several ohms.
- 55. If the sensor has out-of-spec resistance, replace it and clear the codes from the PCM. If the problem persists, further inspect the wiring continuity back to the airbag control module.
Common causes
- Damaged wiring harness or connector
- Faulty passenger airbag sensor
- Corrosion or poor connection at the sensor
- Aftermarket modifications affecting the airbag system
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code active?
No, it's not safe. The passenger airbag won't deploy in an accident.
Will this code come back after I clear it?
If the underlying issue isn't fixed, it will likely return.
Can other codes cause this one to appear?
Yes, related codes for airbag systems can indicate more extensive problems.
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