B0020 — OBD-II trouble code

A body OBD-II trouble code. Below are the vehicles and failure patterns where owners report it, drawn from NHTSA complaints.

In ProblemsByVin's analysis of the NHTSA owner-complaint record, owners cite B0020 across 6 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 B0020 6 patterns

2017 Nissan Altima

airbags — Illuminated airbag warning light with sensor/module failure

2016 Nissan Rogue

airbags — Complete airbag non-deployment in crashes

2015 Nissan Altima

airbags — Occupant Classification System (OCS) Module Malfunction - Passenger Airbag Disablement

2009 Chevrolet Impala

airbags — Service airbag light—intermittent or continuous illumination

2007 Chevrolet Cobalt

airbags — Service airbag warning light illuminates; airbags disabled when lit

2007 Suzuki XL7

airbags — Passenger seat occupancy sensor failure

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 →