B1378 on Kia

Driver side airbag circuit resistance too high (Suzuki, Kia)

Severity: Inspect soon

High resistance in an airbag firing circuit means the computer cannot confirm that airbag, and Honda and Toyota owner's manuals say an airbag light needs prompt attention because the airbags may not work as designed.

Safety-critical system: explanation only, no DIY steps. Source: how we rate severity

This page covers only what differs on Kia. For what B1378 means, the ranked causes and the test order, see the B1378 guide.

What's different on Kia

Kia

2017–2018 · Sedona
Supported by vehicle data
Kia's WTY025 warranty extension covers the front seat side airbag connector. Whether it is still current is not verified.
2001–2005 · Optima
Supported by vehicle data
Kia's bulletins cover B1378 on the Optima. Whether they are still current is not verified.

ELE259Status unverified
Side airbag warning light on with B1378/B1382 (WTY025)
2017–2018sedona · issued August 3, 2022 · NHTSA 10217680
Warranty extension to diagnose and repair the side airbag light; front seat side airbag connector resistance higher than normal.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
035Status unverified
SRS warning lamp for B1378 and B1382
2001–2005optima · issued September 1, 2007 · NHTSA 10022959
SRS warning lamp illumination with B1378 and B1382.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

Sources and review

Kia TSB ELE259: side airbag warning light on with DTC(s) B1378/B1382 (WTY025 warranty extension) — Kia America , August 3, 2022
Kia TSB 035: SRS warning lamp illumination for B1378 and B1382 — Kia Motors America , September 1, 2007
Kia TSB 85: DTC B1378 driver's side airbag, frequently asked questions (Optima) — Kia Motors America , January 1, 2005
NHTSA complaint ODI 10248016 (2004 Kia Optima) — NHTSA Office of Defects Investigation
2023 Accord Owner's Manual: Airbag System Indicators — American Honda Motor Co.
Camry Owner's Manual (OM06291U) — Toyota
Suzuki TS 05 01158: airbag light on, DTC B1378 (driver side airbag resistance too high) and/or B1382 (passenger side airbag resistance too high) — American Suzuki Motor Corp. , January 1, 2008

Last reviewed: October 15, 2026
Written by: Saurabh K.
Editorial review: Pending
Technician review: Technician review pending

This page explains what a code usually means; it is not a substitute for a professional inspection. How we source and review · Report an error

Severity: Inspect soon

What's different on Kia

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Sources and review

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