What Does B00E2 Mean?
This diagnostic trouble code indicates that the Body Control Module (BCM) or Restraint Control Module (RCM) has detected a fault in the deployment control circuit for the third row center seatbelt pretensioner designated as 'B'. The subfault designation suggests an internal circuit malfunction, resistance issue, or communication problem within the pretensioner deployment system. This code typically sets when the control module detects abnormal resistance, an open circuit, short circuit, or improper voltage in the pretensioner firing circuit.
Safety Warning
This is a critical safety system fault that compromises occupant protection in the third row center seating position. The seatbelt pretensioner will not deploy in a collision, significantly increasing injury risk. The SRS warning light will be illuminated, and the vehicle should not be driven with passengers in the affected seating position until repaired immediately.
Common Causes
45%
Faulty seatbelt pretensioner B assembly with internal circuit failure or damaged connector
30%
Damaged, chafed, or broken wiring harness between restraint control module and pretensioner
15%
Corroded or loose electrical connections at pretensioner or control module connector terminals
10%
Faulty Restraint Control Module (RCM) with internal deployment control circuit failure
Diagnostic Steps
1
Step 1: Disconnect the negative battery cable and wait 10 minutes for SRS system capacitors to discharge. Visually inspect the third row center seatbelt pretensioner B connector for corrosion, bent pins, moisture intrusion, or damage. Check connector locking mechanism for proper engagement.
2
Step 2: Using a digital multimeter, measure resistance across the pretensioner deployment circuit terminals (typically 2-4 ohms for a functioning pretensioner). Compare readings to manufacturer specifications. Also check for continuity to ground on each terminal separately (should show infinite resistance/open circuit).
3
Step 3: Inspect the wiring harness from the pretensioner to the Restraint Control Module for physical damage, chafing against sharp edges, pinch points near seat mounting points, or evidence of previous repairs. Pay special attention to areas where harness routes through seat rails or floor pan penetrations.
4
Step 4: If wiring and pretensioner resistance are within specification, disconnect the Restraint Control Module connector and measure resistance from the RCM connector pins to the pretensioner connector (with pretensioner disconnected) to verify harness integrity. Resistance should be less than 5 ohms per circuit with no shorts to ground or other circuits.
5
Step 5: If all wiring and connections test good but code persists, replace the pretensioner assembly. If new pretensioner does not resolve the issue, the Restraint Control Module requires replacement.
6
Step 6: After repairs, clear codes, reconnect battery, perform RCM system initialization procedure per manufacturer specifications, and verify code does not return. Conduct a full SRS system test to ensure all restraint systems function properly.
Estimated Repair Cost
$350 - $1,200
Parts + labor, varies by vehicle and location
This diagnostic trouble code indicates that the Body Control Module (BCM) or Restraint Control Module (RCM) has detected a fault in the deployment control circuit for the third row center seatbelt pretensioner designated as 'B'. The subfault designation suggests an internal circuit malfunction, resi...
The most common cause of B00E2 (Third Row Center Seatbelt Pretensioner "B" Deployment Control (Subfault)) is: Faulty seatbelt pretensioner B assembly with internal circuit failure or damaged connector
Typical repair costs for B00E2 range from $350 to $1,200, 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 occupant protection in the third row center seating position. The seatbelt pretensioner will not deploy in a collision, significantly increasing injury risk. The SRS warning light will be illuminated, and the vehicle should not be driven with passengers in the affected seating position until repaired immediately.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B00E2 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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