What Does B0088 Mean?
This code indicates that the Body Control Module (BCM) or Restraint Control Module (RCM) has detected a fault in the deployment control circuit or system for the third row right seatbelt load limiter. The load limiter is a pyrotechnic device designed to deploy during a collision to reduce chest loading by allowing controlled webbing payout. A subfault condition means the system has detected an electrical issue, previous deployment, or component malfunction that prevents proper operation of this critical safety device.
Safety Warning
This is a critical safety system fault that compromises occupant protection in a collision. The third row right seatbelt load limiter will not function properly during a crash, potentially resulting in serious injury. Vehicle should not be operated with passengers in the affected seating position until repaired, and airbag warning light is likely illuminated.
Common Causes
45%
Previous deployment of seatbelt pretensioner/load limiter requiring replacement of entire seatbelt assembly
30%
Open circuit or high resistance in load limiter deployment wiring harness or connector
15%
Faulty restraint control module (RCM) or body control module (BCM) misreading circuit values
10%
Corrosion or water intrusion in load limiter connector causing resistance or short circuit
Diagnostic Steps
1
Step 1: Perform visual inspection of third row right seatbelt assembly for signs of previous deployment (wrinkled webbing, fired pretensioner, buckle damage). Check for any collision history that may have triggered deployment.
2
Step 2: Using a digital multimeter, measure resistance across the load limiter circuit terminals at the seatbelt connector (disconnected from harness). Typical resistance should be 2-5 ohms; open circuit or out-of-range readings indicate deployed or faulty load limiter.
3
Step 3: Inspect all wiring and connectors from the seatbelt assembly to the restraint control module for damage, corrosion, bent pins, or water intrusion. Check continuity and resistance in all wiring with harness disconnected at both ends.
4
Step 4: Clear the DTC code and monitor for recurrence. If code returns immediately without vehicle movement, suspect RCM/BCM internal fault. If seatbelt assembly shows deployment signs or out-of-spec resistance, replace entire seatbelt assembly and perform system relearn procedure per manufacturer specifications.
Estimated Repair Cost
$400 - $1,200
Parts + labor, varies by vehicle and location
This code indicates that the Body Control Module (BCM) or Restraint Control Module (RCM) has detected a fault in the deployment control circuit or system for the third row right seatbelt load limiter. The load limiter is a pyrotechnic device designed to deploy during a collision to reduce chest load...
The most common cause of B0088 (Third Row Right Seatbelt Load Limiter Deployment Control (Subfault)) is: Previous deployment of seatbelt pretensioner/load limiter requiring replacement of entire seatbelt assembly
Typical repair costs for B0088 range from $400 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 a collision. The third row right seatbelt load limiter will not function properly during a crash, potentially resulting in serious injury. Vehicle should not be operated with passengers in the affected seating position until repaired, and airbag warning light is likely illuminated.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B0088 to identify the root cause.
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Quick Info
Category
Body
System
Supplemental Restraint System (SRS)
Difficulty
Type
Generic (SAE)
Recommended Tools
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