What Does B0083 Mean?
This code indicates a malfunction in the second row left seatbelt load limiter deployment control circuit or system. The load limiter is a pyrotechnic device that allows controlled seatbelt webbing release during a collision to reduce chest injury. The Body Control Module (BCM) or Restraint Control Module (RCM) has detected a subfault condition in the deployment control circuit, which could be an electrical fault, resistance issue, or component failure that would prevent proper operation during a crash event.
Safety Warning
This is a critical safety system fault that compromises occupant protection in the second row left seating position during a collision. The vehicle should not be driven with passengers in this seat until repaired, as the seatbelt may not function properly in a crash. Repair immediately.
Common Causes
45%
Faulty seatbelt pretensioner/load limiter assembly with internal circuit failure or squib resistance out of specification
30%
Damaged, corroded, or disconnected wiring harness and connectors between restraint module and load limiter
15%
Previously deployed load limiter not replaced after collision or system not properly reset after repairs
10%
Faulty Restraint Control Module (RCM) or Body Control Module with internal circuit board failure
Diagnostic Steps
1
Step 1: Perform visual inspection of second row left seatbelt assembly for signs of previous deployment (twisted webbing, slack belt, damaged housing). Check for visible damage to connectors under the seat.
2
Step 2: Using a multimeter, measure resistance across the load limiter squib connector (typically 2-5 ohms when disconnected from module). Compare readings to manufacturer specifications for proper squib resistance range.
3
Step 3: Inspect wiring harness from seatbelt assembly to restraint control module for pinched wires, chafing, water intrusion, or corrosion at connector pins. Check continuity and resistance of all circuit wires.
4
Step 4: Check for proper voltage supply (typically battery voltage) at the restraint module connector with ignition on. Verify ground circuit integrity with less than 0.5 ohms resistance to chassis ground.
5
Step 5: If all circuits test normal and squib resistance is within specification, replace the load limiter assembly as internal faults cannot be repaired. If circuits are faulty, repair wiring and retest.
6
Step 6: After repairs, clear codes and perform restraint system self-test verification. Ensure airbag/seatbelt warning lamp extinguishes and no codes return. Document repairs for vehicle history.
Estimated Repair Cost
$400 - $1,200
Parts + labor, varies by vehicle and location
This code indicates a malfunction in the second row left seatbelt load limiter deployment control circuit or system. The load limiter is a pyrotechnic device that allows controlled seatbelt webbing release during a collision to reduce chest injury. The Body Control Module (BCM) or Restraint Control ...
The most common cause of B0083 (Second Row Left Seatbelt Load Limiter Deployment Control (Subfault)) is: Faulty seatbelt pretensioner/load limiter assembly with internal circuit failure or squib resistance out of specification
Typical repair costs for B0083 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 the second row left seating position during a collision. The vehicle should not be driven with passengers in this seat until repaired, as the seatbelt may not function properly in a crash. Repair immediately.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B0083 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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