U1121 Lost Communication With Electric Stability Program Module

Lost Communication With Electric Stability Program Module. The control module stopped receiving expected network messages from the Electric Stability Program Module node on the vehicle communication bus. This is the manufacturer-specific definition used by Hyundai.

U1121 is a manufacturer-specific code. In this database it is documented for: Hyundai. The same number can mean something different on other brands.

Not guaranteed. Powertrain (P) codes can be reliably disabled in the ECU calibration, but body, chassis and network codes depend on the specific control unit and how the fault is implemented - some can be handled, some cannot. Ask for a quote and our engineers will check your file and tell you, free of charge, whether U1121 is removable in your case.