OBD-II fault code

B0080: Driver Seatbelt Load Limiter Deployment Control (Subfault)

What it means

This code identifies a fault associated with the driver seatbelt load limiter deployment control. The failure type byte specifies the detected fault.

How it works

The driver seatbelt load limiter is part of the SRS belt system and is intended to control belt force on the driver during a crash. The restraints control module monitors its deployment circuit and stores this code when it detects a fault; the accompanying subfault information identifies the specific failure type.

Common causes

Most likely first.

  1. Load limiter circuit wiring or connector fault
  2. Open or short in the deployment circuit
  3. Faulty load limiter
  4. Restraints control module fault

Symptoms

  • Airbag or SRS warning light
  • Load limiter may not operate as intended in a crash

How to diagnose it

  1. Read the SRS subfault details and freeze-frame data to identify the detected circuit condition and its timing.
  2. Inspect the driver load limiter connector and harness for damage, corrosion, looseness, or pinching around the belt assembly.
  3. Check for related SRS codes that may indicate a shared module power, ground, or connection issue.
  4. Using the manufacturer's SRS safety procedure, test the driver load limiter circuit for an open or short matching the subfault.
  5. If wiring passes, test the driver load limiter and restraints control module according to the manufacturer's diagnostic procedure.

Common fixes

  • Secure or repair a loose or corroded driver load limiter connector.
  • Repair an open, short, or damaged wire in the driver load limiter deployment circuit.
  • Replace the driver load limiter assembly if testing confirms it is faulty.
  • Repair or replace the restraints control module if diagnosis confirms an internal fault.

Can I keep driving?

The vehicle may be driveable, but the driver's load limiter may not control belt force as intended in a crash. Wear the belt correctly and arrange prompt SRS diagnosis; do not handle deployment-circuit wiring without the manufacturer's safety procedure.

A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together

This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.

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