B0020

What it means

Left Side Deployment Control: the restraints module has detected a fault in this airbag/pretensioner deployment circuit, which may prevent correct deployment in a crash. Safety-critical.

Is it safe to drive?

The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.

Most likely causes

• Seat harness connector under driver seat damaged

  high

  One of the most commonly reported causes for this code — check this first.

• Side airbag squib circuit open

  medium

  A plausible cause — test and verify before replacing parts.

• SRS control module fault

  low

  Less common, but worth ruling out after the more likely causes.

Related help

• Full B0020 diagnosis, causes & costs
• How to read check engine light codes
• Is it safe to drive with the light on?