What Does B0080 Mean?
This code indicates a malfunction in the driver's seatbelt pretensioner load limiter deployment circuit or system. The Body Control Module (BCM) or Restraint Control Module (RCM) has detected an abnormal condition in the load limiter deployment control circuit, which is designed to manage seatbelt tension during a collision. This subfault suggests a specific issue within the load limiter system that may compromise proper seatbelt operation during an impact.
Safety Warning
This is a critical safety system fault that may prevent proper seatbelt load limiting during a collision, potentially causing increased injury risk. The vehicle should be repaired immediately as the seatbelt pretensioner system may not function correctly in an accident. Do not disable or ignore airbag/SRS warning lights.
Common Causes
45%
Faulty seatbelt pretensioner/load limiter assembly with internal circuit failure or mechanical damage
30%
Damaged or corroded wiring harness, connectors, or terminals in the load limiter deployment circuit
15%
Failed or malfunctioning Body Control Module (BCM) or Restraint Control Module (RCM) with internal fault
10%
Previous airbag/pretensioner deployment not properly reset or replaced after collision
Diagnostic Steps
1
Step 1: Perform visual inspection of the driver seatbelt pretensioner assembly and buckle area for signs of previous deployment, physical damage, water intrusion, or corrosion at connector terminals
2
Step 2: Using a digital multimeter, measure resistance across the load limiter deployment circuit at the pretensioner connector (disconnected). Compare readings to manufacturer specifications, typically 2-5 ohms for squib resistance
3
Step 3: Inspect the complete wiring harness from the pretensioner to the BCM/RCM for chafing, pinching, cuts, or connector corrosion. Pay special attention to areas where harness passes through seat mounting points
4
Step 4: Check BCM/RCM power and ground circuits with multimeter to ensure proper voltage supply (typically 12V) and solid ground connections at module connector
5
Step 5: If all wiring and connections test within specifications, perform load limiter component test using manufacturer-specific diagnostic software to isolate pretensioner assembly versus control module fault
6
Step 6: Clear codes, perform system relearn/initialization procedures as required, and conduct test drive followed by code verification to confirm repair
Estimated Repair Cost
$300 - $1,200
Parts + labor, varies by vehicle and location
This code indicates a malfunction in the driver's seatbelt pretensioner load limiter deployment circuit or system. The Body Control Module (BCM) or Restraint Control Module (RCM) has detected an abnormal condition in the load limiter deployment control circuit, which is designed to manage seatbelt t...
The most common cause of B0080 (Driver Seatbelt Load Limiter Deployment Control (Subfault)) is: Faulty seatbelt pretensioner/load limiter assembly with internal circuit failure or mechanical damage
Typical repair costs for B0080 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 system fault that may prevent proper seatbelt load limiting during a collision, potentially causing increased injury risk. The vehicle should be repaired immediately as the seatbelt pretensioner system may not function correctly in an accident. Do not disable or ignore airbag/SRS warning lights.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to B0080 to identify the root cause.
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Quick Info
Category
Body
System
Supplemental Restraint System (SRS) / Seatbelt Safety System
Difficulty
Type
Generic (SAE)
Recommended Tools
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