B0040: The deployment control for the third row left side airbag has a fault
The deployment control for the third row left side airbag has a fault. That airbag may fail.
| Code | B0040 |
|---|---|
| System | Body |
| Group | B00xx, Body |
| Type | Generic: it means the same on every make |
How to read and clear B0040 with Final OBD
Plug an OBD2 scanner in under the steering wheel, switch the ignition on and open Final OBD. Under Faults you’ll see B0040 with its description and whether it’s confirmed, pending or permanent.
If the engine stores it over standard OBD, with FREE you read this code with its explanation for nothing and clear it. With PRO you also read the faults of every control unit and clear them in all of them.
Clearing the code only turns the light off: if the cause is still there, it comes back. Clear it once it’s fixed, and not right before an inspection. It’s all in how to read and clear fault codes and in inspections and OBD.
Similar codes
- B0038 There is a fault in deployment control for the second row right side airbag
- B0039 There is a fault in deployment control for stage 1 of the second row right
- B003A There is a fault in deployment control for stage 2 of the second row right
- B003B There is a fault in deployment control for stage 3 of the second row right
- B0041 There is a fault in deployment control for stage 1 of the third row left
- B0042 There is a fault in deployment control for stage 2 of the third row left
- B0043 There is a fault in deployment control for stage 3 of the third row left
- B0048 The deployment control for the third row right side airbag has a fault
What does code B0040 mean?
The deployment control for the third row left side airbag has a fault. That airbag may fail.
How do you clear B0040?
With an OBD2 scanner and an app like Final OBD, which clears it for free if it’s stored by the engine control unit. But clearing it only turns the light off: if the cause isn’t fixed, B0040 comes back.
Read it on your car
Final OBD reads and clears engine faults through standard OBD for free, each one explained in plain English. With PRO it also reads the faults of every control unit, each make’s own codes included, and clears them in all of them.
