Airbags

B0080 — Driver Seatbelt Load Limiter Deployment Control Fault

Severity: high Drive with care, to a shop

What B0080 means

During its self-test, the supplemental restraint system (SRS) control module detected a fault in the circuit that controls the driver's seatbelt load limiter. In a crash this device lets the belt pay out in a controlled way to reduce force on the chest. While the fault is active, the module may disable part of the protection or deploy it incorrectly.

Symptoms

  • Airbag (SRS) warning light is on or flashing
  • Light stays on after the engine starts
  • Seatbelt pretensioner or restraint fault message
  • Belt or airbag may not deploy correctly in a crash

Possible causes

  1. Damaged wiring or a poor connection in the driver belt circuit
  2. Faulty load limiter or belt pretensioner
  3. Corroded or loose connector under the seat or in the body pillar
  4. SRS control module fault or calibration issue
  5. Belt components not replaced after a previous crash deployment

How to diagnose

  1. Scan all modules with an SRS-capable tool, record the data, and check whether the code is current or stored
  2. Inspect the driver belt, its anchors, and signs of past deployment or crash repair
  3. Check connectors and harness near the pillar, buckle and under the seat for damage and corrosion
  4. Look for wiring damage caused by seat movement or cabin cleaning
  5. Measure circuit resistance against factory specs, never applying power to squibs
  6. Check battery voltage and the SRS module ground
  7. Evaluate the SRS module and check for software updates or replacement if the circuit tests good

Common fixes

  • Repair damaged wiring and replace corroded connectors
  • Replace the driver seatbelt assembly with its pretensioner or load limiter
  • Reflash or replace the SRS control module
  • Clear the code after repair and confirm the SRS light goes out

Questions and answers

Is it safe to drive with B0080?

The car will run, but the driver's crash protection may not work as designed. Get it checked as soon as you can.

Can I just clear B0080 myself?

You can clear it with a scan tool, but it will return if the fault remains. Leave work on SRS components to a professional, because the pyrotechnic parts can deploy.

This is general information about the code. The meaning can differ between makes and models: a scan tool and the repair manual for your car will show the exact cause.