OBD Guide
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B1908

Short to Positive in Front Pretensioner Squib Left Circuit

B1908 is an OBD-II diagnostic trouble code meaning: Short to Positive in Front Pretensioner Squib Left Circuit. Common causes: wiring harness damage, short circuit to +12v in the squib circuit. Estimated repair cost: $56–222.

Severity
🚨 Critical
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–222 (est.)

Symptoms

  • AIRBAG indicator on the dashboard is on
  • Restraint system disabled
  • Possible errors in related systems

Causes

  • Wiring harness damage
  • Short circuit to +12V in the squib circuit
  • Airbag module malfunction
  • Contact corrosion
  • Problems with the SRS control unit

How to Fix

  1. Diagnose the SRS system with a scanner
  2. Visually inspect the wiring harness for damage.
  3. Measure the resistance and voltage in the pretensioner circuit
  4. Check contacts and connectors for corrosion
  5. Replace damaged wires or components
  6. Reset errors and check system operation

Related codes

B1907B1909B1910B1000

FAQ

What does the B1908 code mean?

B1908 is an OBD-II diagnostic trouble code that indicates: Short to Positive in Front Pretensioner Squib Left Circuit

What causes a B1908 error code?

The most common causes of B1908 include: Wiring harness damage; Short circuit to +12V in the squib circuit; Airbag module malfunction; Contact corrosion.

How do I fix a B1908 diagnostic trouble code?

To fix B1908: Diagnose the SRS system with a scanner. Visually inspect the wiring harness for damage.. Measure the resistance and voltage in the pretensioner circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1908?

Do not drive — repair immediately

How much does it cost to fix B1908?

The estimated repair cost for B1908 is $56–222. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat