# U1008 on the 2026 Hyundai Palisade

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

This code is specific to a manufacturer and is not described here.

## Bulletins for this model year that name U1008

- [11036209](https://open.wenmarpro.com/bulletins/11036209), 2026-08-15: 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.
- [11036208](https://open.wenmarpro.com/bulletins/11036208), 2026-08-15: 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.
- [11029499](https://open.wenmarpro.com/bulletins/11029499), 2026-03-04: 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.
- [11029498](https://open.wenmarpro.com/bulletins/11029498), 2026-03-04: 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.