What Does B007E Mean?
This code indicates the Body Control Module (BCM) or Restraint Control Module (RCM) has detected a fault in the deployment control circuit for the driver's seatbelt pretensioner 'C'. The pretensioner is a pyrotechnic device that instantly retracts the seatbelt during a collision to reduce occupant movement. The subfault designation suggests an internal circuit issue, resistance problem, or communication error within the pretensioner deployment system that prevents proper operation during a crash event.
Safety Warning
This is a critical safety issue as the seatbelt pretensioner will not function properly during a collision, significantly increasing injury risk. The vehicle should not be driven until repaired, and the airbag warning light will remain illuminated indicating compromised occupant protection.
Common Causes
45%
Faulty or damaged seatbelt pretensioner assembly with internal circuit failure or degraded pyrotechnic squib resistance
30%
Damaged, corroded, or disconnected wiring harness or connector between BCM/RCM and pretensioner unit
15%
Faulty Restraint Control Module (RCM) or Body Control Module with internal deployment circuit malfunction
10%
Improper seatbelt pretensioner installation after previous replacement or repair causing high resistance
Diagnostic Steps
1
Step 1: Perform a thorough visual inspection of the driver's seatbelt pretensioner assembly, wiring harness, and connector for physical damage, corrosion, water intrusion, or loose connections. Check for previous accident repairs or deployed components.
2
Step 2: Using a digital multimeter, measure the resistance across the pretensioner squib terminals (with connector disconnected and ignition OFF) - typical values range 2-4 ohms depending on manufacturer. Compare to specifications and check for open or short circuits.
3
Step 3: Inspect the wiring harness continuity from the pretensioner connector to the RCM/BCM connector using a multimeter. Check for opens, shorts to ground, or shorts to power. Verify ground circuit integrity with less than 1 ohm resistance.
4
Step 4: Check RCM/BCM power and ground circuits with ignition on, verifying proper voltage supply (typically 12V) and stable ground reference. Monitor live data for pretensioner circuit voltage and resistance readings if available.
5
Step 5: If all circuits test normal, suspect internal pretensioner failure or RCM/BCM fault. Replace the pretensioner assembly first as it is most common, ensuring proper torque specifications and connector seating.
6
Step 6: Clear codes, perform system initialization/calibration procedure as specified by manufacturer, and verify repair by monitoring live data and confirming no code returns after multiple drive cycles and ignition cycles.
Estimated Repair Cost
$300 - $1,200
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 deployment control circuit for the driver's seatbelt pretensioner 'C'. The pretensioner is a pyrotechnic device that instantly retracts the seatbelt during a collision to reduce occupant m...
The most common cause of B007E (Driver Seatbelt Pretensioner "C" Deployment Control (Subfault)) is: Faulty or damaged seatbelt pretensioner assembly with internal circuit failure or degraded pyrotechnic squib resistance
Typical repair costs for B007E range from $300 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
This is a critical safety issue as the seatbelt pretensioner will not function properly during a collision, significantly increasing injury risk. The vehicle should not be driven until repaired, and the airbag warning light will remain illuminated indicating compromised occupant protection.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B007E to identify the root cause.
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Quick Info
Category
Body
System
Supplemental Restraint System (SRS) / Airbag System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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