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Service bulletins for the 2026 Hyundai Palisade

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

23 on file from NHTSA, as of 2026-10-19.

About U0285 on the 2026 Hyundai Palisade: what the code means, and the bulletins and recalls about the same components.

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Only bulletins with trouble code: U0285 are shown. Show all

Bulletins, newest first
26-01-026H-1 WebDCS2026-08-15. Warranty extension. ENGINE. Certain Palisade (LX3) and Palisade Hybrid (LX3 HEV) vehicles may exhibit a “Check Active Air Flap System" warning message, Engine MIL ON, and/or “Low Engine Oil" warning message, due to improper operation of the Active Air Flap (AAF) system. DTCs include, but are not limited to: P05AE00, P05B100, P05B200, P05B400, P05FE00, P15A200, P15A500, P2C7400, U028500, U028B00, and/or U100800. This condition may be caused by water ingress and corrosion at the wiring connections for the lower AAF actuators and/or sensors.
26-01-026H-1 TSB2026-08-15. Warranty extension. ENGINE. Certain Palisade (LX3) and Palisade Hybrid (LX3 HEV) vehicles may exhibit a “Check Active Air Flap System” warning message, Engine MIL ON, and/or “Low Engine Oil” warning message, due to improper operation of the Active Air Flap (AAF) system. DTCs include, but are not limited to: P05AE00, P05B100, P05B200, P05B400, P05FE00, P15A200, P15A500, P2C7400, U028500, U028B00, and/or U100800. This condition may be caused by water ingress and corrosion at the wiring connections for the lower AAF actuators and/or sensors. This bulletin contains instructions to inspect the front bumper wiring connectors, AAF actuators, and sensors for water ingress and corrosion, and to replace them if necessary.
26-01-026H DCS2026-03-04. Warranty extension. ENGINE. Certain Palisade (LX3) and Palisade Hybrid (LX3 HEV) vehicles may exhibit a “Check Active Air Flap System" warning message, Engine MIL ON, and/or “Low Engine Oil" warning message, due to improper operation of the Active Air Flap (AAF) system. DTCs include, but are not limited to: P05AE00, P05B100, P05B200 P05B400, P05FE00, P15A200, P15A500, P2C7400, U028500, U028B00, and/or U100800. This condition may be caused by water ingress and corrosion at the wiring connections for the lower AAF actuators and/or sensors. This Technical Service Bulletin (TSB) 26-01-026H contains instructions to inspect the front bumper wiring connectors, AAF actuators, and sensors for water ingress and corrosion, and to replace them if necessary.
26-01-026H TSB2026-03-04. Warranty extension. ENGINE. Certain Palisade (LX3) and Palisade Hybrid (LX3 HEV) vehicles may exhibit a “Check Active Air Flap System” warning message, check engine light on, and/or “Low Engine Oil” warning message, due to improper operation of the Active Air Flap (AAF) system. DTCs include, but are not limited to: P05AE00, P05B100, P05B200 P05B400, P05FE00, P15A200, P15A500, P2C7400, U028500, U028B00, and/or U100800. This condition may be caused by water ingress and corrosion at the wiring connections for the lower AAF actuators and/or sensors. This bulletin contains instructions to inspect the front bumper wiring connectors, AAF actuators, and sensors for water ingress and corrosion, and to replace them if necessary.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.