# C1805 on the 2021 Hyundai Elantra

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 C1805

- [10225460](https://open.wenmarpro.com/bulletins/10225460), 2022-11-01: Some 2021 \~ 2022MY Elantra \(CN7, CN7a, CN7 HEV\) vehicles may exhibit a condition with multiple warning lights displayed on the instrument cluster and various symptoms; multiple DTCs \(Diagnostic Trouble Code\), reduction in power steering assist, and not able to shift out of Park. Possible DTCs set are: • C181287 – CAN Time\-out Gateway • C181208 – CAN Time\-out Gateway • C180581 – LKAS CAN Signal Error • C181887 – CAN Time\-out BCA • B109052 – TCU Missing Error This bulletin provides the service procedure to update the ICU \(Integrated Central Control Unit\) software to resolve the conditions stated above.
- [10222083](https://open.wenmarpro.com/bulletins/10222083), 2022-09-27: Some 2021 \~ 2022MY Elantra \(CN7, CN7a, CN7 HEV\) vehicles may exhibit a condition with multiple warning lights displayed on the instrument cluster and various symptoms; multiple DTCs \(Diagnostic Trouble Code\), reduction in power steering assist, and not able to shift out of Park. Possible DTCs set are: C181287 – CAN Time\-out Gateway, C181208 – CAN Time\-out Gateway, C180581 – LKAS CAN Signal Error, C181887 – CAN Time\-out BCA, B109052 – TCU Missing Error This bulletin provides the service procedure to update the ICU \(Integrated Central Control Unit\) software to resolve the conditions stated above.
- [10200074](https://open.wenmarpro.com/bulletins/10200074), 2021-08-07: Some 2021 Elantra \(CN7\) vehicles may exhibit a condition with multiple warning lights displayed on the instrument cluster and various symptoms; multiple DTCs \(Diagnostic Trouble Code\), reduction in power steering assist, and not able to shift out of Park. Possible DTCs set are: • C181287 – CAN Time\-out Gateway • C181208 – CAN Time\-out Gateway • C180581 – LKAS CAN Signal Error • C181887 – CAN Time\-out BCA • B109052 – TCU Missing Error