Airbags

B007C — Second Row Right Seatbelt Pretensioner "B" Deployment Control Circuit Fault

Severity: medium Safe to drive

What B007C means

The supplemental restraint system (SRS) module constantly tests the squib circuit of the right rear seatbelt pretensioner for correct resistance, opens and shorts. B007C is set when the "B" circuit falls outside the expected range. The module may disable that pretensioner, so it might not fire in a crash.

Symptoms

  • Airbag/SRS warning light on or flashing
  • Light stays on after the ignition is switched on
  • Stored circuit fault in the SRS module
  • Fault that comes and goes with vibration or after interior work

Possible causes

  1. Faulty right rear seatbelt pretensioner
  2. Open or short in the pretensioner wiring
  3. Poor connection or corrosion at the pretensioner connector
  4. Wiring damaged under the seat or in the pillar, or after seat or trim work
  5. Rarely, a failed SRS module

How to diagnose

  1. Scan with a tool that reads SRS codes and note every stored fault
  2. Inspect the pretensioner connector near the right rear pillar or under the seat for latch, moisture and corrosion
  3. Check the harness for chafing, pinching and signs of past repairs
  4. Confirm the seat or belt was not removed or reinstalled incorrectly
  5. Measure circuit resistance only per the factory procedure, with the battery disconnected and the specified wait time observed
  6. Never probe the circuit with a regular meter or test light unless the manual allows it, as the squib can fire
  7. Clear the code and see if it returns

Common fixes

  • Clean and restore the connector for a solid contact
  • Repair or replace the damaged section of harness
  • Replace the right rear seatbelt pretensioner
  • Replace or reprogram the SRS module if the fault is confirmed there

Questions and answers

What does B007C mean?

The airbag module detected a fault in the control circuit of the second row right seatbelt pretensioner "B". It is usually caused by wiring, a connector or the pretensioner itself.

Can I test the pretensioner circuit myself?

You can read the code and visually inspect connectors. Any electrical testing must be done with the battery disconnected and per the service manual, because the pretensioner is explosive and may deploy. A professional is the safer choice.

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.