OBD Guide

B0135

Short Left Seat Belt Pretensioner Squib Circuit

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–167 (est.)

Symptoms

  • SRS/Airbag light is on
  • Error B0135 is stored in the fault memory
  • No pretensioner activation during an accident

Causes

  • Short circuit in wiring harness
  • Pretensioner squib malfunction
  • Damaged contacts or corrosion
  • SRS module malfunction
  • Broken chain or damaged pretensioner

How to Fix

  1. Check the resistance of the squib circuit
  2. Inspect the wiring harness for damage
  3. Check connector contacts
  4. Replace squib or pretensioner if necessary
  5. Reset SRS errors and check the system

Related codes

Error B0135 by Vehicle Brand