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These are special codes to identify vehicle faults related to the transfer of data from one module to another. Connectivity networks deteriorate and leave entire systems outside the mechanism. The other modules then create a code concerning that system. It is usually reflected by the letter U, preceded by a digit, which may well indicate whether the failure is generic or if it is within the manufacturer’s system. If this is the case, it means that the manufacturer has prepared a specific solution for the fault. There are different ways to identify the source of the fault, for example, codes U0000 to U1000 and U3000 to U4000 are generic in nature. But, between the range of U1000 and U3000, they are from the manufacturer, depending on the make of the car.

U0418

U0418 - INVALID DATA RECEIVED FROM BRAKE SYSTEM CONTROL MODULE

The Controller Area Network (CAN) is a complex bus designed for automobiles to ...

U1120

U1120 - FAULT CODE - OBD2

The Controller Area Network, known as CAN bus, is a communication system established ...

U1111

U1111 - FAULT CODE - OBD2

The odometer, also known as an odometer, is a tool used to take ...

U1110

U1110 - FAULT CODE - OBD2

The PCM (Powertrain Control Module) receives an electrical signal informing it of the ...

U0131

U0131 - LOST COMMUNICATION WITH POWER STEERING CONTROL MODULE (PSCM)

The Power Steering Control Module (PSCM) is provided with information from sensors, in ...

U0122

U0122 - DATA BUS: VEHICLE DYNAMICS CONTROL MODULE - NO CONNECTION

The controllers installed in the car use a communication protocol called Control Area ...