What Does B00E3 Mean?
This code indicates the Body Control Module (BCM) has detected a subfault in the deployment control circuit for the second row left seatbelt pretensioner 'C'. The BCM monitors the pretensioner system continuously and has identified an abnormal condition in the firing circuit, control wiring, or pretensioner device itself that could prevent proper deployment during a collision. This is a critical safety system fault that requires immediate attention.
Safety Warning
This vehicle is unsafe to drive as the second row left seatbelt pretensioner may not deploy properly during a collision, significantly increasing injury risk to passengers. Immediate professional repair is required before transporting passengers in this seating position.
Common Causes
35%
Damaged or corroded wiring/connector between BCM and pretensioner device
30%
Faulty seatbelt pretensioner device with internal circuit fault
20%
BCM internal fault or software corruption in pretensioner control circuit
10%
Previous deployment or collision damage causing open/short circuit
5%
Improper repair or installation after seat service
Diagnostic Steps
1
Step 1: Perform visual inspection of second row left seatbelt pretensioner assembly for physical damage, previous deployment indicators (torn seat covers, missing trim), or signs of collision damage
2
Step 2: Disconnect battery negative terminal and wait 10 minutes, then inspect pretensioner connector and wiring harness under seat for corrosion, bent pins, moisture intrusion, or chafing damage
3
Step 3: Using a digital multimeter, measure resistance across pretensioner connector terminals (BCM side) to verify circuit continuity and proper resistance range (typically 2-5 ohms); check for short to ground or open circuit conditions
4
Step 4: Inspect BCM connectors for corrosion or damage, check BCM power and ground circuits with multimeter, verify proper voltage supply (typically 12V ignition-switched power)
5
Step 5: If wiring and connections test normal, replace pretensioner assembly following manufacturer safety procedures with battery disconnected and wait appropriate time before reconnection
6
Step 6: Clear codes, reconnect battery, perform BCM pretensioner system self-test using scan tool active tests, verify fault does not return and system passes functionality check
Estimated Repair Cost
$400 - $1,200
Parts + labor, varies by vehicle and location
This code indicates the Body Control Module (BCM) has detected a subfault in the deployment control circuit for the second row left seatbelt pretensioner 'C'. The BCM monitors the pretensioner system continuously and has identified an abnormal condition in the firing circuit, control wiring, or pret...
The most common cause of B00E3 (Second Row Left Seatbelt Pretensioner "C" Deployment Control (Subfault)) is: Damaged or corroded wiring/connector between BCM and pretensioner device
Typical repair costs for B00E3 range from $400 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
This vehicle is unsafe to drive as the second row left seatbelt pretensioner may not deploy properly during a collision, significantly increasing injury risk to passengers. Immediate professional repair is required before transporting passengers in this seating position.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B00E3 to identify the root cause.
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Quick Info
Category
Body
System
Supplemental Restraint System (SRS) / Seatbelt Pretensioner
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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