B1018 — manufacturer-specific body code

B1018 is a manufacturer-specific body code: it is defined by the carmaker, not by the OBD-II standard, so the same code can mean different things on different brands. Below are the vehicles and failure patterns where owners report it, drawn from NHTSA complaints — the most reliable guide to what it means in practice.

Ask A Mechanic

In our record, B1018 is reported most often on Nissan and INFINITI vehicles , against airbags and electrical failure patterns , across 2007–2014 model years. Nissan alone accounts for 80% of them.

In ProblemsByVin's analysis of the NHTSA owner-complaint record, owners cite B1018 across 25 vehicle failure patterns. Diagnostic codes in complaints are reported by owners and are unverified — they point to where this code shows up, not a confirmed diagnosis. Open a page below for the full pattern (symptoms, mileage, repair costs owners cite).

Vehicles where owners report B1018 25 patterns

2014 Nissan Rogue

airbags — Passenger Occupancy Sensor Malfunction / Airbag Light Stays On

2012 INFINITI G37

airbags — Passenger Occupant Classification Sensor Failure

2012 Nissan Altima

airbags — Passenger airbag off warning light intermittently illuminates

2012 Nissan Murano

airbags — Passenger occupancy sensor failure causing airbag disabled indication

2012 Nissan Rogue

airbags — Passenger Seat Occupant Classification / Weight Sensor Malfunction

2012 Nissan Leaf

airbags — Passenger occupancy sensor (OCS) failure

2011 INFINITI G37

airbags — Occupant Classification System (OCS) Sensor Failure

2011 Nissan Leaf

airbags — Occupant Classification System (OCS) Sensor Failure

2011 Nissan Rogue

airbags — Passenger seat occupant classification sensor (OCS) failure

2011 Nissan Rogue

electrical — Passenger seat occupancy sensor (OCS) failure—airbag disabled

2011 Nissan Murano

airbags — Passenger Occupant Classification System (OCS) Sensor Failure

2010 Nissan 370Z

electrical — SRS Occupant Classification System Sensor Failure

2010 Nissan Murano

airbags — Occupant Classification System (OCS) / Seat Occupant Sensor Malfunction

2009 INFINITI G37

airbags — Passenger Occupancy Classification System (OCS) Sensor Failure – Flashing Airbag Warning Light

2009 INFINITI G37

electrical — Occupant Classification Sensor failure (passenger airbag)

2009 Nissan Altima

airbags — Passenger Occupant Detection System (OCS) / Seat Sensor Malfunction

2009 Nissan Murano

electrical — Alternator/Charging System Failure

2009 Nissan Murano

airbags — Occupant Classification System (OCS) / Passenger Seat Sensor Failure

2009 Nissan Rogue

airbags — Passenger-side occupant classification system (OCS) sensor failure

2009 Nissan Maxima

airbags — Passenger Occupant Sensor Malfunction / Airbag Deactivation

2008 INFINITI G35

airbags — Passenger Occupant Sensor (OCS) Malfunction - Intermittent Disabling

2008 Nissan Altima

airbags — Occupant Classification System (OCS) Malfunction – Passenger Airbag Off Light

2008 Nissan Rogue

airbags — Passenger-side occupant classification system (OCS) sensor malfunction

2008 Nissan Sentra

airbags — Airbag Warning Light Illumination / Blinking

2007 Nissan 350Z

airbags — Passenger seat occupancy/sensor warning light illumination

Codes are pulled from what owners wrote in their NHTSA filings — they're allegations, not a shop diagnosis. Always confirm with a live scan. Browse all diagnostic codes →