OBD Guide
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B1801

Open in Driver Side Squib Circuit

B1801 is an OBD-II diagnostic trouble code meaning: Open in Driver Side Squib Circuit. Common causes: broken wires in the srs system harness, oxidation or damage to connectors. Estimated repair cost: $56–167.

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

Symptoms

  • SRS (airbag) light is on
  • SRS does not activate during test
  • Lack of response to pillow diagnostics

Causes

  • Broken wires in the SRS system harness
  • Oxidation or damage to connectors
  • Airbag squib malfunction
  • Problems with the SRS control unit
  • Short circuit in the circuit

How to Fix

  1. Check the integrity of the squib circuit with a multimeter
  2. Inspect connectors and contacts for corrosion
  3. Replace damaged wires or connectors
  4. Check the resistance of the squib (should be within 2-3 Ohms)
  5. If necessary, replace the squib or SRS control unit
  6. Reset the error and check the system operation

Related codes

B1800B1802B1000

FAQ

What does the B1801 code mean?

B1801 is an OBD-II diagnostic trouble code that indicates: Open in Driver Side Squib Circuit

What causes a B1801 error code?

The most common causes of B1801 include: Broken wires in the SRS system harness; Oxidation or damage to connectors; Airbag squib malfunction; Problems with the SRS control unit.

How do I fix a B1801 diagnostic trouble code?

To fix B1801: Check the integrity of the squib circuit with a multimeter. Inspect connectors and contacts for corrosion. Replace damaged wires or connectors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1801?

Limited driving only, diagnose soon

How much does it cost to fix B1801?

The estimated repair cost for B1801 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat