B1378 — 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 B1378 across 7 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 B1378 7 patterns

2018 Genesis G80

steering — Steering Wheel Airbag Failure to Deploy

2009 Kia Spectra

airbags — Passenger Seat Occupant Sensor (OCS) Mat Failure

2008 Kia Optima

airbags — Passenger-side occupancy sensor malfunction - intermittent false 'off' indication

2007 Suzuki Forenza

airbags — Passenger airbag warning light stays on with occupant present

2006 Suzuki Reno

airbags — Airbag warning light stays on or returns repeatedly

2005 Hyundai Sonata

airbags — Airbag warning light—connector and wiring faults

2005 Suzuki Reno

airbags — Airbag warning light persistent/recurrent

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 →