B1018 code in owner complaints

Code B1018 is named in 82 US owner complaints. Models: 14, model years 2007–2014.

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 B1018: 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 018 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: 82
Models: 14
Model years: 2007–2014

Which models and years

Models whose owners name this code (14). Years link to the model year problems page.

Model	Years	Complaints
Infiniti G37	2009, 2010, 2011, 2012	16
Nissan Rogue	2008, 2009, 2010, 2011, 2012, 2013, 2014	16
Nissan Leaf	2011, 2012	15
Nissan Murano	2009, 2010, 2011, 2012	12
Nissan Altima	2008, 2009, 2012	6
Infiniti G35	2008	4
Nissan Maxima	2008, 2009, 2014	4
Infiniti G25	2011, 2012	2
Nissan 370Z	2010	2
Infiniti EX35	2012	1
Infiniti M35	2008	1
Nissan 350Z	2007	1
Nissan GT-R	2010	1
Nissan Sentra	2008	1

Components named together with the code

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

Air bags 80
Seats 20
Electrical system 5
Seat belts 2
Other 1

Complaints by model year

2007 1
2008 13
2009 21
2010 7
2011 19
2012 16
2013 2
2014 3

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.

They hooked up to it and discovered the issue. They said the code was B1018 (OCS), air bag... They gave me a recall notice that detailed the issue, and said that the dealership would repair this for free. The NHTSA #/Campaign ID# says it includes B8242 (Murano, Rogue, 350Z).
Nissan Rogue 2008 · 2026-06
Car throws a B1018 DTC, which is for the passenger seat occupancy sensor. The seat occupancy sensor failing poses a major safety risk, as it causes the airbags to not deploy properly in the event of a crash.
Nissan Leaf 2011 · 2025-04
2012 Infiniti G25x: Occupancy sensor failed (diagnostic code B1018) around 132,000 miles. This is a common problem with Infiniti cars. Apparently for 2007 and 2008, there were recalls, but this problem continued into later years with no recall.
Infiniti G25 2012 · 2025-01

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.