B1929
Air Bag Safing Sensor Output Circuit Open
B1929 is an OBD-II diagnostic trouble code meaning: Air Bag Safing Sensor Output Circuit Open. Common causes: broken or damaged wiring harness, oxidation of safety sensor contacts. Estimated repair cost: $56–167.
Symptoms
- The airbag light on the dashboard is on
- SRS does not activate in an accident
- Error B1929 is stored in the control unit memory
Causes
- Broken or damaged wiring harness
- Oxidation of safety sensor contacts
- Safety sensor malfunction
- Problems with the SRS control unit
How to Fix
- Check the integrity of the safety sensor wiring harness
- Clean the sensor contacts from oxidation
- Replace the safety sensor if necessary
- Check and replace the SRS control unit if the problem persists
Related codes
FAQ
What does the B1929 code mean?
B1929 is an OBD-II diagnostic trouble code that indicates: Air Bag Safing Sensor Output Circuit Open
What causes a B1929 error code?
The most common causes of B1929 include: Broken or damaged wiring harness; Oxidation of safety sensor contacts; Safety sensor malfunction; Problems with the SRS control unit.
How do I fix a B1929 diagnostic trouble code?
To fix B1929: Check the integrity of the safety sensor wiring harness. Clean the sensor contacts from oxidation. Replace the safety sensor if necessary. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B1929?
Do not drive — repair immediately
How much does it cost to fix B1929?
The estimated repair cost for B1929 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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