U1121 · Manufacturer communications

AUDI · 2026-08-11

This bulletin provides information when DTC P00000 / U112100 is stored in diagnostic address 0009.

AUDI · 2026-05-22

This bulletin provides information when DTC P00000 / U112100 is stored in diagnostic address 0009.

AUDI · 2025-12-11

This bulletin provides information when the arning lamp for exterior lighting is displayed in the instrument cluster; DTC U112100, U110B00, B126A29.

AUDI · 2025-09-26

This bulletin provides information when a warning lamp for exterior lighting is displayed in the instrument cluster; DTC U112100, U110B00, B126A29.

AUDI · 2024-09-09

This bulletin provides information when DTC U112100 stored in the suspension control unit - J775.

AUDI · 2024-09-09

This bulletin provides information when DTC U112100 is stored in the stability control modules 00D4/00D5.

AUDI · 2024-08-29

This bulletin provides information when there is a warning in the instrument cluster relating to exterior lighting/Audi adaptive light. DTC B126A29, U112100, U110B00..

AUDI · 2024-07-31

This bulletin provides information in instances where the warning lamp for exterior lighting is displayed in the instrument cluster, DTC U112100, U110B00, B126A29.

AUDI · 2024-07-31

This bulletihn provides information when various ghost DTCs, B200000, P0CA400, P33E300, U15BF00 and/or U112100 are stored in the HV battery charger ECU.

AUDI · 2024-07-19

This bulletin provides service info for the e-tron GT; DTCs U110E00, U110100, U112100 in 008C.

AUDI · 2024-05-14

This bulletin provides information pertaining to an air suspension malfunction warning in the cluster. DTC C1260F0, U112100.

AUDI · 2024-04-05

This bulletin provides information when there is an air suspension malfunction warning in the cluster; DTC C1260F0n or U112100 is stored in the suspension control module.

CADILLAC, CHEVROLET, GMC · 2024-03-15

This Preliminary information communicates an issue with: Overhead Console Inoperative / Service Safety Restraints Message / Sunroof Inoperative / DTC's B1A7A and U1121. Dealers are to cycle the power to the overhead console to correct the issue. Engineering has released updated roof consoles to correct this concern. Dealers are to replace the roof console.

AUDI · 2024-01-04

This bulletin provides information for when DTC U112100 stored in the suspension control unit - J775.

AUDI · 2023-08-24

This bulletin provides information for when there is an air suspension malfunction warning in the cluster; DTC C1260F0 or U112100.

AUDI · 2023-05-19

During PDI, the DTC U112100 with symptom codes 262222, 252256, and 262258 are stored. These DTCs have no effect on the suspension system.

CADILLAC, CHEVROLET, GMC · 2023-04-26

This Preliminary information communicates an issue during start up that the following symptoms occur: - Service Safety Restraints System Message - Sunroof Inoperative - Sunshade Lights Inoperative - Dome Lights Inoperative - Power Liftgate Inoperative when using switch in overhead console - DTCs U1121 set in the BCM and B1A7A set in the Restraints Module Dealers are to replace the overhead roof console with a new console that has revised software.

CADILLAC, CHEVROLET, GMC · 2023-04-04

This Preliminary information communicates an issue during start up that the following symptoms occur: - Service Safety Restraints System Message - Sunroof Inoperative - Sunshade Lights Inoperative - Dome Lights Inoperative - Power Liftgate Inoperative when using switch in overhead console - DTCs U1121 set in the BCM and B1A7A set in the Restraints Module Engineering is currently working on a fix and in the meantime a customer can cycle the dome light switch on/off to correct the condition during that ignition cycle.

BENTLEY · 2023-01-30

DTC U112100 is Evident Following the Replacement of the Steering Column Combination Switch (J527) Customer Statement: -The steering column combination switch (J527) has been replaced and DTC U112100 is evident and cannot be cleared

CADILLAC, CHEVROLET, GMC · 2023-01-25

This Preliminary information communicates an issue during start up that the following symptoms occur: - Service Safety Restraints System Message - Sunroof Inoperative - Sunshade Lights Inoperative - Dome Lights Inoperative - Power Liftgate Inoperative when using switch in overhead console - DTCs U1121 set in the BCM and B1A7A set in the Restraints Module Engineering is currently working on a fix and in the meantime a customer can cycle the dome light switch on/off to correct the condition during that ignition cycle.

CADILLAC, CHEVROLET, GMC · 2022-09-27

This Preliminary information communicates an issue during start up that the following symptoms occur: - Service Safety Restraints System Message - Sunroof Inoperative - Sunshade Lights Inoperative - Dome Lights Inoperative - Power Liftgate Inoperative when using switch in overhead console - DTCs U1121 set in the BCM and B1A7A set in the Restraints Module Engineering is currently working on a fix and in the meantime a customer can cycle the dome light switch on/off to correct the condition during that ignition cycle.

AUDI · 2022-06-09

This bulletin contains repair instructions for DTC C1260F0 and U112100 with an air suspension malfunction warning.

AUDI · 2022-06-09

This bulletin contains information on DTC U112100 with various symptom codes which may be stored during pre-delivery inspection.

AUDI · 2022-06-09

This bulletin contains instructions for DTC U112100.

CHEVROLET, GMC · 2022-05-09

This Preliminary information communicates an issue with: Overhead Console Inoperative / Service Safety Restraints Message / Sunroof Inoperative / DTC's B1A7A and U1121. Dealers are to cycle the power to the overhead console to correct the issue. Engineering has released updated roof consoles to correct this concern. Dealers are to replace the roof console.

PORSCHE · 2022-02-16

instructions on advanced technical information for 2021 E-Hybrid OBD Fault. U112100 DTC D1211D “Data bus - missing message”.

CHEVROLET, GMC · 2021-11-22

This Preliminary information communicates an issue with: Overhead Console Inoperative / Service Safety Restraints Message / Sunroof Inoperative / DTC's B1A7A and U1121. Dealers are to cycle the power to the overhead console to correct the issue. Engineering has released updated roof consoles to correct this concern. Dealers are to replace the roof console.

CHEVROLET, GMC · 2021-08-26

This Preliminary information communicates an issue with: Overhead Console Inoperative / Service Safety Restraints Message / Sunroof Inoperative / DTC's B1A7A and U1121. Dealers are to cycle the power to the overhead console to correct the issue. Engineering has released updated roof consoles to correct this concern. Dealers are to replace the roof console.

CHEVROLET, GMC · 2021-08-16

This Preliminary information communicates an issue with: Overhead Console Inoperative / Service Safety Restraints Message / Sunroof Inoperative / DTC's B1A7A and U1121. Dealers are to cycle the power to the overhead console to correct the issue. Engineering has released updated roof consoles to correct this concern. Dealers are to replace the roof console.

AUDI · 2021-08-12

This bulletin contains repair instructions for DTC C1260F0 and U112100 with an air suspension malfunction warning.