B0040

Third Row Left Side Airbag Deployment Control

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Airbag light is on
Third row airbag does not deploy in crash
Error persists after scanning

Causes

Open or short circuit in wiring harness
Faulty airbag squib
Problems with the airbag control unit
Contact corrosion

How to Fix

Check the wiring harness for opens and shorts
Check squib resistance
Inspect contacts for corrosion
Scan the control unit for additional errors
Replace faulty components

Related codes

B0030 B0050 B0060