# C1B03 on the 2021 Ford Bronco

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 C1B03

- [11037537](https://open.wenmarpro.com/bulletins/11037537), 2026-09-29: This article supersedes TSB 25\-2575 to update the Parts list to add the applicable body wiring harnesses and underbody shield bolts. Some vehicles listed in the Model statement above may exhibit a "Sta\-bar Disconnect Service Required" message in the instrument panel cluster \(IPC\) with any of the following diagnostic trouble codes \(DTCs\) stored in the chassis control module \(CHCM\): C103A, C1A99, C1B03, C1B07, C1B14 and/or B1A67. This may be due to water intrusion in the stabilizer bar wiring harness connector.
- [11025876](https://open.wenmarpro.com/bulletins/11025876), 2025-12-02: This article supersedes TSB 24\-2104 to update the vehicle model years affected. Some vehicles listed in the Model statement above may exhibit a "Sta\-bar Disconnect Service Required" message in the instrument panel cluster \(IPC\) and an illuminated warning light with any of the following diagnostic trouble codes \(DTCs\) stored in the chassis control module \(CHCM\): C103A, C1A99, C1B03, C1B07, C1B14 and/or B1A67. This may be due to water intrusion in the stabilizer bar wiring harness connector.
- [10248359](https://open.wenmarpro.com/bulletins/10248359), 2024-01-05: This article supersedes TSB 23\-2086 to update the parts list. Some 2021\-2023 Bronco vehicles may encounter a Sta\-bar Disconnect Service Required message in the instrument panel cluster and an illuminated warning light with any of the following diagnostic trouble codes \(DTCs\) stored in the chassis control module \(CHCM\): C103A, C1A99, C1B03, C1B07, C1B14 and/or B1A67. To correct the condition, follow the Service Procedure to address water intrusion and reprogram the CHCM.
- [10242847](https://open.wenmarpro.com/bulletins/10242847), 2023-09-26: This article supersedes TSB 23\-2006 to update the vehicle model years affected. Some 2021\-2023 Bronco vehicles may encounter a Sta\-bar Disconnect Service Required message in the instrument panel cluster and an illuminated warning light with any of the following diagnostic trouble codes \(DTCs\) stored in the chassis control module \(CHCM\): C103A, C1A99, C1B03, C1B07, C1B14 and/or B1A67. To correct the condition, follow the Service Procedure to address water intrusion and reprogram the CHCM.
- [10230772](https://open.wenmarpro.com/bulletins/10230772), 2023-01-31: Some 2021\-2022 Bronco may encounter a sta\-bar disconnect service required message in the instrument panel cluster and a warning light illuminated with any of the following diagnostic trouble codes \(DTCs\) stored in the chassis control module \(CHCM\): C103A, C1A99, C1B03, C1B07, C1B14 and/or B1A67. To correct the condition, follow the Service Procedure to address water intrusion and reprogram the CHCM.
- [10205719](https://open.wenmarpro.com/bulletins/10205719), 2022-01-01: Some 2021 Bronco Badlands and First Edition vehicles built on or before 19\-Nov\-2021 with a stabilizer bar disconnect system may exhibit an illuminated red and/or amber stabilizer bar disconnect indicator and diagnostic trouble codes \(DTC\) C103A:74, C1B03:67 and/or C1B07:67 stored in the chassis control module\(CHCM\). This may be due to the software in the CHCM. To correct the condition, follow the Service Procedure to reprogram the CHCM.