Which cars report code B0040?

Code B0040 is named in 5 US owner complaints. Models: 4, model years 2004–2018. Chevrolet Corvette, GMC Yukon XL, Nissan Rogue, Suzuki XL-7.

B0040 code: Third Row Left Side Airbag Deployment Control

Q: What does code B0040 mean?

Third Row Left Side Airbag Deployment Control. How to read B0040: the letter B means body (including airbags and belts); the second digit 0 marks a generic SAE code shared by all makes; the last three characters 040 identify the specific fault.

Code B0040 is named in 5 US owner complaints. Models: 4, model years 2004–2018.

What the code means

Third Row Left Side Airbag Deployment Control. Generic meaning per SAE J2012 (the same for all makes).

How to read B0040: the letter B means body (including airbags and belts); the second digit 0 marks a generic SAE code shared by all makes; the last three characters 040 identify the specific fault.

Restraint system codes: airbag squibs, belt pretensioners, crash sensors and occupant classification. After a crash with airbag deployment, many makers require the restraint module to be replaced or reset by procedure because it stores crash data. An airbag light on an auction car is not cosmetic: airbags, the module and sensors can cost more than the body repair.

Key figures

Complaints with this code: 5
Models: 4
Model years: 2004–2018

Which models and years

Models whose owners name this code (4). Years link to the model year problems page.

Model	Years	Complaints
Chevrolet Corvette	2007, 2012	2
GMC Yukon XL	2004	1
Nissan Rogue	2018	1
Suzuki XL-7	2007	1

Components named together with the code

Component as the owner filed it (one complaint can list several).

Air bags 5
Electrical system 1
Seat belts 1

Complaints by model year

2004 1
2007 2
2012 1
2018 1

What to do if an auction car has this code

Ask for a dash photo at start-up: the airbag light must go off after the self-test.
Check the interior photos for deployed airbags and fired belt pretensioners: replacing the restraint module, airbags and sensors is a large separate part of the estimate.
Budget a scan with a restraint module read-out: the code alone does not say which part failed.

What owners report

Excerpts of owner complaints in the original wording. Owner statements not verified by the regulator; personal data removed.

[dealer], NY Technician tried to perform zero-point rest but was unable to do. Found current code B0040-00 Occupant sensor unit in abnormal voltage and pass diagnostic trouble code B00A0-02 occupant sensor unit malfunction. Recommended to replace occupant detector unit and seat frame . It costs $3,133.26.
Nissan Rogue 2018 · 2026-10
Dash airbag service light periodically illuminated. This condition (to date), has not resulted in logging any diagnostic fault codes, I.e.; dtc(s) B0012, B0013, B0016, B0016, B0019, B0020, B0022, B0023, B0026, B0033, B0040, B0042 or B0044, this illuminated service light fault is only rectified when either; a) I…
Chevrolet Corvette 2007 · 2016-07
Serviceman said "frayed wire at seat belt", code B0040. Written up as "driver seat connector unplugged". They added dielectric grease, re-mated the connector and now the intermittent airbag dash warning light has ceased.
Chevrolet Corvette 2012 · 2014-04

Related codes

Sources: public official US data (owner complaints) and the SAE J2012 standard. Complaints are owner statements not verified by the regulator. A code from a complaint does not replace a scan tool diagnosis. Data updated 2026-11-10.