OBD Guide
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B1861

Open in Driver Side Knee Airbag Squib Circuit

B1861 is an OBD-II diagnostic trouble code meaning: Open in Driver Side Knee Airbag Squib Circuit. Common causes: broken wire in the harness, oxidation or damage to the connector. Estimated repair cost: $56–167.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Airbag light is on
  • Lack of system response during diagnostics
  • Recording a fault code in the memory of the SRS unit

Causes

  • Broken wire in the harness
  • Oxidation or damage to the connector
  • Squib malfunction
  • Problem with SRS control unit

How to Fix

  1. Conduct a visual inspection of the wiring harness and connectors
  2. Check the resistance of the squib circuit
  3. Replace damaged wires or connectors
  4. If necessary, replace the squib or SRS unit
  5. Clear the error and check the system

Related codes

B1860B1862B1000

FAQ

What does the B1861 code mean?

B1861 is an OBD-II diagnostic trouble code that indicates: Open in Driver Side Knee Airbag Squib Circuit

What causes a B1861 error code?

The most common causes of B1861 include: Broken wire in the harness; Oxidation or damage to the connector; Squib malfunction; Problem with SRS control unit.

How do I fix a B1861 diagnostic trouble code?

To fix B1861: Conduct a visual inspection of the wiring harness and connectors. Check the resistance of the squib circuit. Replace damaged wires or connectors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1861?

Limited driving only, diagnose soon

How much does it cost to fix B1861?

The estimated repair cost for B1861 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat