OBD Guide

B0077

Third Row Center Seat Belt Pretensioner Deployment Control

B0077 is an OBD-II diagnostic trouble code meaning: Third Row Center Seat Belt Pretensioner Deployment Control. Common causes: open or short circuit in wiring harness, faulty pretensioner squib. 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
  • Seat belt pretensioner malfunction
  • Lack of system response during diagnostics

Causes

  • Open or short circuit in wiring harness
  • Faulty pretensioner squib
  • Problems with the airbag control module
  • Contact corrosion

How to Fix

  1. Conduct diagnostics of the passive safety system
  2. Check the integrity of the wiring harness
  3. Check the resistance of the pretensioner squib
  4. Replace faulty components
  5. Reset the error and check the system

Related codes

Error B0077 by Vehicle Brand

FAQ

What does the B0077 code mean?

B0077 is an OBD-II diagnostic trouble code that indicates: Third Row Center Seat Belt Pretensioner Deployment Control

What causes a B0077 error code?

The most common causes of B0077 include: Open or short circuit in wiring harness; Faulty pretensioner squib; Problems with the airbag control module; Contact corrosion.

How do I fix a B0077 diagnostic trouble code?

To fix B0077: Conduct diagnostics of the passive safety system. Check the integrity of the wiring harness. Check the resistance of the pretensioner squib. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B0077?

Do not drive — repair immediately

How much does it cost to fix B0077?

The estimated repair cost for B0077 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat