Airbags

B0076 — Third Row Left Seatbelt Pretensioner Deployment Control Circuit Fault

Severity: medium Safe to drive

What B0076 means

The SRS (airbag) control module continuously monitors the squib circuit of the third-row left seatbelt pretensioner. B0076 is stored when the circuit's resistance or voltage is out of range, such as an open, a short to ground or a short to voltage. The system then cannot guarantee the pretensioner will fire in a crash, so it turns on the SRS warning light.

Symptoms

  • SRS or airbag warning light on in the instrument cluster
  • Dash message about a seatbelt or SRS fault
  • Code returns after restarting the car or disconnecting the battery
  • Third-row belt reminder may behave incorrectly

Possible causes

  1. Open or shorted wiring in the third-row left pretensioner circuit
  2. Corroded or loose connector at the pretensioner or under the seat
  3. Harness damaged by folding seats, cargo or interior repairs
  4. Faulty pretensioner (squib resistance out of range)
  5. Failed SRS control module
  6. Aftermarket or incorrectly installed belt, seat or pretensioner hardware

How to diagnose

  1. Scan all SRS codes with a scan tool that supports airbag systems and save the freeze-frame data
  2. Ask about recent interior work or seat removal or replacement
  3. Disconnect the battery and wait as the manufacturer specifies, then inspect the harness and connectors near the third row
  4. Check connectors for corrosion, bent terminals and unlatched locks
  5. Inspect the harness for chafing, pinching and breaks, especially at flex points near the seats
  6. Test circuit resistance only per service information, never probing the squib directly with a standard meter
  7. Clear the code and see if it returns; if so, evaluate the SRS module

Common fixes

  • Repair or replace the damaged harness section or connector
  • Clean and securely reseat the connectors
  • Replace the faulty pretensioner or seatbelt assembly
  • Replace or reprogram the SRS module if the circuit tests good

Questions and answers

What does B0076 mean?

The SRS module detected a fault in the control circuit of the third-row left seatbelt pretensioner. Wiring or a connector is the most common cause.

Can I drive with code B0076?

You can drive it, but the protection for that seat may not work in a crash. Have it diagnosed as soon as you can.

Can I test the pretensioner circuit myself?

You can inspect connectors and wiring visually, but SRS work requires care. Never apply voltage to a squib or test it with an ordinary meter; leave that to a shop.

This is general information about the code. The meaning can differ between makes and models: a scan tool and the repair manual for your car will show the exact cause.