What is a fault code?

Definition: Automobile fault code is the fault code reflected by ECU analysis of automobile computer after automobile fault occurs. Automobile fault code query software can query the system fault codes of standard OBD and non-standard OBD. Including all fault codes of P\\B\\C\\U4 system.

Common car fault codes:

P0 107: the input voltage of the intake pressure sensor is too low;

P0 108: the input voltage of the intake pressure sensor is too high;

P0 109: air temperature sensor circuit is bad or the intake pressure sensor circuit is intermittent;

P0 1 10: air temperature sensor circuit is intermittent.

Extended data:

Principle of automobile fault code;

The vehicle fault self-checking terminal can diagnose whether the sensors and actuators of the electronic control system and ECU work normally, and send fault codes when abnormal.

When a circuit in the electronic control system has an out-of-specification signal, the fault information reflected by the circuit and related sensors will be stored in the memory of ECU in the form of fault codes, and the maintenance personnel can use the diagnostic instrument to read and display the fault codes.

Fault code is a necessary condition in control logic, which is used to judge whether some functions have control conditions. If not, the function will be cancelled or restricted, and the driver will be prompted. When the important signal is limited, it will be replaced by the standby signal.

Baidu Encyclopedia-Automobile Fault Code

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