What Does B00E7 Mean?
This code indicates the Body Control Module (BCM) or Restraint Control Module (RCM) has detected a fault in the third row left seatbelt pretensioner circuit "C" deployment control system. The subfault designation suggests an internal circuit issue, wiring problem, or component malfunction affecting the pretensioner's ability to deploy during a collision event. This is a safety-critical system component that tensions the seatbelt during a crash to reduce occupant movement.
Safety Warning
This is a critical safety system fault that compromises seatbelt effectiveness during a collision. The pretensioner may fail to deploy in an accident, increasing risk of serious injury to third row left occupants. Repair should be completed immediately by a qualified technician.
Common Causes
35%
Faulty seatbelt pretensioner assembly or internal pretensioner circuit failure
30%
Damaged, corroded, or disconnected wiring harness between BCM/RCM and pretensioner
20%
Failed or malfunctioning Restraint Control Module (RCM) or Body Control Module (BCM)
10%
Incorrect pretensioner resistance or impedance out of specification
5%
Previous deployment or impact damage not properly reset or replaced
Diagnostic Steps
1
Step 1: Perform visual inspection of third row left seatbelt pretensioner assembly and wiring harness for physical damage, corrosion, or signs of previous deployment (deployed pretensioners cannot be reused)
2
Step 2: Disconnect pretensioner connector and measure resistance across pretensioner terminals using a digital multimeter (typical specification: 2-3 ohms, verify with manufacturer specs). Resistance out of range indicates faulty pretensioner
3
Step 3: Inspect pretensioner connector terminals and wiring harness for corrosion, bent pins, water intrusion, or damaged insulation. Repair or replace harness as needed
4
Step 4: Using advanced scan tool, perform actuator test or pretensioner circuit integrity test if available (do NOT attempt live deployment test). Monitor live data for circuit voltage and resistance readings
5
Step 5: Check for proper ground continuity from pretensioner circuit to chassis ground (should be less than 1 ohm resistance). Verify power supply voltage to RCM/BCM is within specification (typically 12-14V)
6
Step 6: If all previous tests pass, suspect RCM/BCM failure. Replace pretensioner assembly if faulty, clear codes, and verify repair using scan tool to confirm no active or pending codes remain
Estimated Repair Cost
$250 - $800
Parts + labor, varies by vehicle and location
This code indicates the Body Control Module (BCM) or Restraint Control Module (RCM) has detected a fault in the third row left seatbelt pretensioner circuit "C" deployment control system. The subfault designation suggests an internal circuit issue, wiring problem, or component malfunction affecting ...
The most common cause of B00E7 (Third Row Left Seatbelt Pretensioner "C" Deployment Control (Subfault)) is: Faulty seatbelt pretensioner assembly or internal pretensioner circuit failure
Typical repair costs for B00E7 range from $250 to $800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
This is a critical safety system fault that compromises seatbelt effectiveness during a collision. The pretensioner may fail to deploy in an accident, increasing risk of serious injury to third row left occupants. Repair should be completed immediately by a qualified technician.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B00E7 to identify the root cause.
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Quick Info
Category
Body
System
Supplemental Restraint System (SRS) / Occupant Safety System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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