OBD Guide
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B2629

Left Rear Sensor Failure

B2629 is an OBD-II diagnostic trouble code meaning: Left Rear Sensor Failure. Common causes: broken or damaged wiring harness, sensor malfunction. Estimated repair cost: $56–167.

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

Symptoms

  • Airbag light is on
  • Error B2629 in the control unit memory
  • Incorrect operation of the passive safety system

Causes

  • Broken or damaged wiring harness
  • Sensor malfunction
  • Oxidation of contacts
  • Damage to the control unit

How to Fix

  1. Check the integrity of the wiring harness to the sensor
  2. Check contacts for oxidation
  3. Replace faulty sensor
  4. Reset the error and check the system

Related codes

B2630B2631B2628

FAQ

What does the B2629 code mean?

B2629 is an OBD-II diagnostic trouble code that indicates: Left Rear Sensor Failure

What causes a B2629 error code?

The most common causes of B2629 include: Broken or damaged wiring harness; Sensor malfunction; Oxidation of contacts; Damage to the control unit.

How do I fix a B2629 diagnostic trouble code?

To fix B2629: Check the integrity of the wiring harness to the sensor. Check contacts for oxidation. Replace faulty sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2629?

Do not drive — repair immediately

How much does it cost to fix B2629?

The estimated repair cost for B2629 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat