How to solve the U3003 fault code?

Bus failure, it is recommended to enter the store for inspection.

U3003 fault code, applicable to all car manufacturers, means battery voltage.

Whenever the car is troubleshooting, the fault code needs to be cleared. When clearing the fault, be sure to follow the fault clearance method specified in the specified model, and must not casually remove the negative pole of the battery to clear the car fault code. Otherwise, it is likely to cause problems in the following two situations:

First, cause some models of the control center computer to lose normal records, I believe we all know, many models of car computers are with automatic memory function, easy removal of the battery negative pole of the iron wire, will automatically clear the engine operation data stored in RAM (random memory), which is why some people find that after the maintenance is cleared, find that the performance for a long time is not good or driving soon, and there will be the previous fault code; Second, sometimes it will lead to some useful functions not working, such as the function of audio locking is one of the common situations, at this time, to restore the normal function of the sound system, it is necessary to decrypt the audio, which is very troublesome.

Summary. ABS light is a fault of the car's braking system, it may be that the brake pads are worn out excessively, the sensor is damaged, the brake fluid is insufficient, etc., it is recommended to check whether the brake fluid is too low first. If the brake fluid is normal, if the car has been tens of thousands of kilometers and the brake pads have not been replaced, it may be that the brake pads are worn out beyond the standard, and it is recommended to replace them.

If these two problems are not the same, it may be a problem with the sensor, or something else, and it is recommended to check and repair it. The braking performance of the car is one of the main properties of the car, and major traffic accidents are often related to the long braking distance and the skidding during emergency braking, so the braking performance of the car is an important guarantee for the safe driving of the car.

Hello, for this case, it is generally due to the failure of the gateway system, like this failure**After reading, you can see which system has a problem, and you need to check whether the computer power supply of this system is normal.

Generally, a fault like this may be a fault with the CAN line or a problem with the computer board.

Land Rover Aurora instrument code is fast and ABS fault light is on, ABS inside the report or U0001 87, high-speed CAN communication delay bus - message missing, and U0300 00 internal module software is incompatible - there is no sub-type information. What about people. At.

ABS light is a fault of the brake system of the rental car, which may be excessive wear of the brake pads, damage to the sensor, insufficient brake fluid, etc., it is recommended to check whether the brake fluid is too low. If the rest of the canopy brake fluid is normal, if the car has been tens of thousands of kilometers and has not changed the brake pads, it may be that the brake pads are worn out beyond the standard, and it is recommended to replace them. If these two problems are not the same, it may be a problem with the sensor, or something else, and it is recommended to check and repair it.

The braking performance of the car is one of the main properties of the car, and major traffic accidents are often related to the long braking distance and the skidding during emergency braking, so the braking performance of the car is an important guarantee for the safe driving of the car.

It's all nonsense, can't you see what I'm asking.

ABS light is a car brake system fault sock traces, may be brake pad wear exceeds the standard, sensor damage, brake fluid is not enough, etc., it is recommended to collapse first to see if the brake fluid is too low.

High-speed CAN communication bus - message missing.

If the working voltage provided by the automotive power supply system is abnormal, it will cause some electronic control modules to have a short period of fugue mode abnormal operation, which will cause the communication of the entire automotive CAN bus system to be poor.

The fault code U007300 indicates that the communication bus of the control module is disconnected, and the condition for generating the fault code is that the control module tries to establish communication on the serial data power supply road for more than 3 times within 5 seconds, which is invalid.

The fault code U007300 causes the fault as follows: the power supply of the transmission control module (the gateway receiving the transmission) or the connection is suddenly interrupted during driving, resulting in the transmission control module stopping work as a whole; During driving, the CAN communication enable line of the transmission control module is suddenly disconnected or the voltage is too low, which will cause the CAN bus communication of the transmission control module to be interrupted. Internal failure of the transmission control module.

If this problem occurs, please go to the 4S or repair shop as soon as possible for inspection and maintenance.

The vehicle fault self-test terminal can diagnose the status of the sensors and actuators of the electronic control system and whether the ECU is working normally, and send a fault code when it is abnormal. When a circuit in the electronic control system has a signal that exceeds the specified value, the fault information reflected by the circuit and related sensors will be stored in the memory inside the ECU in the form of fault codes, and maintenance personnel can use the diagnostic instrument to read the fault bad code and display it.

Fault codes are necessary conditions in control logic to determine whether certain functions have control conditions. Otherwise, the function or restricted function will be canceled while the driver is prompted. If important signals are restricted, backup signals will be provided to replace them.