B1891
Air Bag Tone Warning Indicator Circuit Short to Battery
B1891 is an OBD-II diagnostic trouble code meaning: Air Bag Tone Warning Indicator Circuit Short to Battery. Common causes: short circuit in wiring harness, srs indicator lamp malfunction. Estimated repair cost: $56–167.
Symptoms
- Constant glow of the SRS lamp on the dashboard
- The SRS lamp does not light up when the ignition is turned on
- Restraint system error message
- Incorrect operation of the warning indicator
Causes
- Short circuit in wiring harness
- SRS indicator lamp malfunction
- Damage to the SRS control unit
- Dashboard wiring problems
- Corrosion or oxidation of contacts
How to Fix
- Check the condition of the SRS wiring harness
- Check the continuity of the indicator circuit using a multimeter
- Inspect connectors and contacts for damage
- If necessary, replace faulty components
- Reset SRS system errors after repair
Related codes
FAQ
What does the B1891 code mean?
B1891 is an OBD-II diagnostic trouble code that indicates: Air Bag Tone Warning Indicator Circuit Short to Battery
What causes a B1891 error code?
The most common causes of B1891 include: Short circuit in wiring harness; SRS indicator lamp malfunction; Damage to the SRS control unit; Dashboard wiring problems.
How do I fix a B1891 diagnostic trouble code?
To fix B1891: Check the condition of the SRS wiring harness. Check the continuity of the indicator circuit using a multimeter. Inspect connectors and contacts for damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B1891?
Limited driving only, diagnose soon
How much does it cost to fix B1891?
The estimated repair cost for B1891 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat