B1890
PAD Warning Lamp Circuit Short to Battery
B1890 is an OBD-II diagnostic trouble code meaning: PAD Warning Lamp Circuit Short to Battery. Common causes: damage to the wiring harness in the warning lamp circuit, short circuit to positive (for example, due to frayed insulation). Estimated repair cost: $22–167.
Symptoms
- Airbag warning light stays on constantly
- No response from the warning lamp when the ignition is turned on
- Unexpected airbag deployment (rare)
Causes
- Damage to the wiring harness in the warning lamp circuit
- Short circuit to positive (for example, due to frayed insulation)
- SRS control unit malfunction
- Problems with contacts in the passive safety system connectors
How to Fix
- Diagnose the SRS system using a scanner
- Check the integrity of the wiring harness in the warning lamp circuit
- Examine connectors and contacts for oxidation or damage
- If necessary, replace damaged wires or connectors
- Reset the error and check the system operation
Related codes
FAQ
What does the B1890 code mean?
B1890 is an OBD-II diagnostic trouble code that indicates: PAD Warning Lamp Circuit Short to Battery
What causes a B1890 error code?
The most common causes of B1890 include: Damage to the wiring harness in the warning lamp circuit; Short circuit to positive (for example, due to frayed insulation); SRS control unit malfunction; Problems with contacts in the passive safety system connectors.
How do I fix a B1890 diagnostic trouble code?
To fix B1890: Diagnose the SRS system using a scanner. Check the integrity of the wiring harness in the warning lamp circuit. Examine connectors and contacts for oxidation or damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B1890?
Do not drive — repair immediately
How much does it cost to fix B1890?
The estimated repair cost for B1890 is $22–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat