How to Resolve the U112300 Fault?
2 Answers
u112300 fault can be resolved by: checking the gateway for the communication line of the missing module, locating the breakpoint, and repairing it to restore normal function. The U112300 fault is a vehicle fault value received by the master data, usually caused by a communication bus circuit break. After troubleshooting the car fault, it is necessary to clear the fault code. When clearing the fault code, it should be done strictly according to the specific vehicle model's designated fault code clearing procedure. Be careful not to casually remove the negative ground wire of the battery to clear the fault code. Fault codes refer to the codes detected by the computer after a car fault occurs, making it easier for maintenance personnel to accurately locate the faulty part and repair it.
Last time my car displayed the U112300 fault code, and to be honest, it gave me quite a scare. This type of error usually indicates a problem with the vehicle's network communication, meaning there's poor communication between various electronic modules. It could be caused by loose wiring, corrosion, or a malfunctioning controller, such as the anti-theft system or engine module losing connection. I tried unplugging and reconnecting all the relevant connectors myself and used an OBD scanner to check the data—the scanning process is straightforward, just plug in the device and read the fault source. If the code reappears after clearing it, you need to inspect the bus connections. In my case, I found that the CAN line connector under the trunk was loose, and securing the wiring harness fixed the issue. For prevention, I recommend regularly cleaning the wiring harness areas to prevent dust buildup and avoid moisture corrosion. Driving safety is a big deal, and unresolved communication faults can affect other functions, so I addressed it immediately to avoid risks. Checking connection points during routine maintenance is a hassle-free way to stay on top of things.
