Airbags

B00E7 — Third Row Left Seatbelt Pretensioner 'C' Deployment Control Fault

Severity: medium Drive with care, to a shop

What B00E7 means

The airbag (SRS) control module regularly tests its squib circuits, including those for seatbelt pretensioners. B00E7 means it found a problem in the deployment control circuit for pretensioner 'C' on the third row left belt, reported as a subfault. The cause may be the pretensioner, its wiring, or a connector.

Symptoms

  • Airbag/SRS warning light on or flashing
  • B00E7 stored in the SRS module
  • Third row left pretensioner may not deploy in a crash
  • Light may come and go with bumps or moisture

Possible causes

  1. Faulty third row left seatbelt pretensioner
  2. Open or shorted wiring to the pretensioner
  3. Poor contact or corrosion at the pretensioner connector
  4. Wiring damaged under the cargo trim or by folding seats
  5. Faulty SRS control module (uncommon)

How to diagnose

  1. Scan all modules with an SRS-capable tool and note freeze frame data
  2. Ask about recent repairs, trim removal, or third row seat work
  3. Inspect the pretensioner harness and connector for damage, moisture, and corrosion
  4. Confirm the connector is fully seated and its lock is intact
  5. Disconnect the battery and wait per the maker's procedure, then check circuit continuity against the wiring diagram without powering the squib
  6. Measure resistance only per the manufacturer's method; never test a pretensioner with a regular meter
  7. Clear the code and see whether it returns

Common fixes

  • Clean and secure the pretensioner connector
  • Repair or replace the damaged wiring section
  • Replace the third row left seatbelt pretensioner
  • Replace the SRS module if the fault is confirmed there

Questions and answers

What does B00E7 mean?

It is a fault in the deployment control circuit for pretensioner 'C' on the third row left seatbelt. The SRS module sees a problem in the circuit or device.

Can I fix an SRS circuit myself?

You can inspect the connector, but pyrotechnic parts can deploy accidentally. Disconnect the battery and follow the manufacturer's procedure, or have a shop do it.

Will the seatbelt still work with B00E7?

It most likely still works as a normal belt, but the pretensioner may not fire in an impact. Have it fixed as soon as you can.

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.