OBD Guide
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B1906

Open in Front Pretensioner Squib Left Circuit

B1906 is an OBD-II diagnostic trouble code meaning: Open in Front Pretensioner Squib Left Circuit. Common causes: broken srs wiring harness, damaged pretensioner squib. Estimated repair cost: $56–333.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–333 (est.)

Symptoms

  • Airbag (SRS) light is on
  • Restraint system error message on the dashboard
  • Disabling the second stage of the pretensioner

Causes

  • Broken SRS wiring harness
  • Damaged pretensioner squib
  • Corrosion or poor contact in connectors
  • SRS control module malfunction
  • Damage after an accident or unqualified repair

How to Fix

  1. Diagnose the pretensioner circuit with a multimeter
  2. Check connectors and wiring harness for damage
  3. Replace the squib if necessary
  4. Replace the wiring harness if damage is found.
  5. Reset SRS errors with a scanner after repair
  6. Check the operation of the system on the stand

Related codes

B1907B1905B1900

FAQ

What does the B1906 code mean?

B1906 is an OBD-II diagnostic trouble code that indicates: Open in Front Pretensioner Squib Left Circuit

What causes a B1906 error code?

The most common causes of B1906 include: Broken SRS wiring harness; Damaged pretensioner squib; Corrosion or poor contact in connectors; SRS control module malfunction.

How do I fix a B1906 diagnostic trouble code?

To fix B1906: Diagnose the pretensioner circuit with a multimeter. Check connectors and wiring harness for damage. Replace the squib if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1906?

Do not drive — repair immediately

How much does it cost to fix B1906?

The estimated repair cost for B1906 is $56–333. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat