What it means
The restraint module monitors the deployment circuit for the third-row left seatbelt pretensioner C. It sets this code when the circuit’s measured electrical characteristics are outside the expected range.
At a glance
- Usually lights the airbag (SRS) or body-system warning light
How it works
The restraint control module monitors the deployment circuit for the third-row left seatbelt pretensioner C, which is intended to tighten that belt during a crash. B00E7 means the circuit’s electrical reading is outside its expected range, potentially preventing the module from deploying this specific pretensioner.
Common causes
Most likely first.
- Open or short in pretensioner circuit
- Damaged wiring or connector
- Failed pretensioner inflator
- Fault in the restraint control module
Symptoms
- Warning light or symbol related to the affected system
- Comfort or safety function impaired
How to diagnose it
- Read B00E7 and any companion restraint codes with a scan tool that can access the restraint module, and record freeze-frame details before clearing codes.
- Inspect the third-row left belt area for damage, water intrusion, or recent trim work that may have affected the pretensioner C wiring.
- Following the manufacturer’s restraint-system disable procedure, check the third-row left pretensioner C connector and harness for corrosion, loose terminals, pin damage, or chafing.
- Test the named circuit for an open or short using the manufacturer’s approved method and equipment; avoid directly probing the inflator with a standard multimeter.
- If the circuit is intact, use the maker’s diagnostic procedure to distinguish a failed third-row left pretensioner from a restraint control module fault.
Common fixes
- Restore a loose connection or repair damaged third-row left pretensioner C wiring using the specified repair method.
- Replace a damaged connector or harness section if inspection or circuit testing identifies it as the fault.
- Replace the third-row left pretensioner assembly if approved testing confirms an inflator failure.
- Repair or replace the restraint control module if its fault is confirmed after circuit checks.
Can I keep driving?
The third-row left pretensioner C may not tighten its belt in a crash, and the restraint warning may indicate reduced protection. Avoid using that seat until repaired; keep clear of the inflator and follow the maker’s safety procedure for any work.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.