B1B02 code in owner complaints

Code B1B02 is named in 24 US owner complaints. Models: 8, model years 2005–2018.

There is little data for this code or its meaning is ambiguous, so this page is not indexed.

What the code means

This is a manufacturer-specific code: the meaning depends on the make and sometimes on the year.

How to read B1B02: the letter B means body (including airbags and belts); the second digit 1 marks a manufacturer code whose meaning is set by the make; the last three characters B02 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: 24
Models: 8
Model years: 2005–2018

Which models and years

Models whose owners name this code (8). Years link to the model year problems page.

Model	Years	Complaints
Jeep Wrangler	2009, 2010, 2011, 2012, 2013, 2016, 2018	17
Chrysler 300	2005	1
Chrysler Sebring	2008	1
Dodge Magnum	2005	1
Jeep Grand Cherokee	2008	1
Jeep Patriot	2010	1
Jeep Wrangler 2-DR 4X4	2008	1
Jeep Wrangler 4-DR 4X4	2008	1

Components named together with the code

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

Air bags 22
Electrical system 6
Steering 5
Other 3
Forward collision avoidance 1

Complaints by model year

2005 2
2008 4
2009 1
2010 4
2011 3
2012 3
2013 4
2016 1
2018 2

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.

The clock spring is the one that controls cruise, airbag, horn, traction, etc. i took it to the dealership and they said the vehicle was showing the B1B02 code, witch the the same why all the other jeeps were recalled but there is not a recall yet for my year.
Jeep Wrangler 2018 · 2024-11
This is a 2018 Jeep Wrangler 2018 JKU RHD and this vehicle starting to get the airbag light on and off in the dash! I brought it to a dealer to read it and they said the code is the B1B02 that means the clock spring is going out and it wasnt safe to drive it because the air bag will not deploy.
Jeep Wrangler 2018 · 2024-11
The contact stated that the air bag warning light had been illuminated. The vehicle was taken to an independent mechanic where it was scanned and diagnosed with DTC code: B1B02; for a failure with the driverâs side air bag. Additionally, the clock spring test had failed internally.
Jeep Wrangler 2012 · 2024-05

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.