B00E7 medium Severity

B00E7: Third Row Left Seatbelt Pretensioner 'C' Deployment Control (Subfault)

May illuminate airbag/airbag-related warning with potential safety system impairment; generally does not affect engine performance directly.

Overview

Diagnostic Trouble Code B00E7 indicates a fault with the third row left seatbelt pretensioner 'C' deployment control circuit or function. Common automotive diagnostic resources classify this as a body/safety restraint system issue, potentially involving wiring, connections, or the pretensioner device itself.

Common Symptoms

  • Airbag warning light or supplemental restraint system indicator illuminated
  • Stored B00E7 code on scan indicating seatbelt pretensioner circuit issue
  • Possible seatbelt tensioner not arming correctly

Most Common Causes

Faulty third row left seatbelt pretensioner 'C' high

Component may have internal fault or inability to meet expected parameters.

Open or shorted harness for the third row left seatbelt pretensioner circuit high

Wiring harness integrity issues often reported in community and technical references.

Poor electrical connection at pretensioner connector medium

Corroded or loose connector may intermittently trigger this code.

Incorrect signal or sensor fault in deployment control circuit medium

Sensor or control circuit could be out of specification.

Diagnostic Steps

  1. Retrieve full code and freeze frame data with a capable OBD-II scanner supporting body codes.
    Expected: B00E7 present, no other conflicting codes in restraint system.
    Interpretation: Confirm that B00E7 is current and not a historic/soft code.
  2. Perform visual inspection of the third row left seatbelt pretensioner wiring and connectors.
    Expected: No damaged wires, corrosion, or loose connectors.
    Interpretation: Good wiring reduces likelihood of harness-related faults.
  3. Test continuity and resistance of pretensioner circuit including connectors and harness.
    Expected: Continuity within specification and no short to ground or battery.
    Interpretation: Abnormal readings indicate wiring or circuit fault.
  4. If wiring checks good, verify pretensioner device operation or replace with known good unit if available.
    Expected: Proper device response and no recurrence of B00E7 after replacement.
    Interpretation: Confirms pretensioner as root cause.

Repair Solutions

Repair/replace wiring harness to third row left seatbelt pretensioner medium
Estimated Cost: $100 - $400

Costs vary with labor and parts; includes connector repair if needed.

Replace third row left seatbelt pretensioner assembly hard
Estimated Cost: $300 - $1200

Safety restraint components often require dealer-level parts and calibration.

Clean and secure pretensioner electrical connections easy
Estimated Cost: $0 - $50

Good first step for intermittent code causes.

Common Misdiagnoses

Avoid these common diagnostic mistakes:

  • Treating B00E7 as a powertrain or hybrid battery code without supporting evidence
  • Assuming generic OBD engine fault rather than body/safety restraint system issue

Frequently Asked Questions

Technical definition of B00E7 OBD-II Code

When your OBD-II scanner reads B00E7, it means: Third Row Left Seatbelt Pretensioner 'C' Deployment Control (Subfault). This code is related to the vehicle's Sensors.

Reflecting on severity: How bad is B00E7?

This is a medium priority issue. May illuminate airbag/airbag-related warning with potential safety system impairment; generally does not affect engine performance directly.

How do I know if I have code B00E7?

You may experience the following: Airbag warning light or supplemental restraint system indicator illuminated, Stored B00E7 code on scan indicating seatbelt pretensioner circuit issue, Possible seatbelt tensioner not arming correctly.

Common triggers for the B00E7 error

It can be caused by several factors, most notably: Faulty third row left seatbelt pretensioner 'C', Open or shorted harness for the third row left seatbelt pretensioner circuit, Poor electrical connection at pretensioner connector.

What is the price difference for fixing B00E7?

It depends on what needs to be fixed. Clean and secure pretensioner electrical connections repairs are cheaper (~$50), while Replace third row left seatbelt pretensioner assembly repairs are on the higher end (~$1200).

What cars are affected by the B00E7 code?

B00E7 is not specific to any one brand. It can appear on Ford, Dodge, Toyota, Honda, Jeep, and other vehicles.

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