How to Handle the Issue of the Instrument Panel Not Receiving EECU Messages?
2 Answers
Methods for handling the issue of the instrument panel not receiving EECU messages: If the signal from the engine control unit (EECU) cannot be received, the common cause is a loose connector, and professional maintenance personnel should be consulted as soon as possible. Generally, this issue is due to a circuit break between the EECU and VECU. Similar faults, such as CAN message timeouts, also belong to circuit break problems. Each wire and connector should be thoroughly inspected. The EECU, also known as the ECU, is the computer board installed on the engine block and serves as the central control system of the engine. The main computer boards in vehicles include the engine computer, automatic transmission computer, body control system computer, and comfort system computer. Modern vehicles use increasingly more computers, which are becoming more integrated and miniaturized.
Just helped a friend deal with a similar issue a few days ago. I'm the kind of person who enjoys tinkering with cars and figuring things out myself. The dashboard not receiving signals from the engine control unit is actually quite common. I'd suggest first checking the connection plugs under the hood, especially the wiring between the engine module and the dashboard—sometimes poor contact causes this issue. Try restarting the vehicle, meaning turning off the engine and then restarting it; sometimes a system reset can restore communication. If that doesn’t work, get a simple diagnostic tool to plug into the OBD port and check for trouble codes—like whether it's a sensor issue or a bus short circuit. Don’t ignore this small problem, as it might affect the accuracy of the speedometer, making driving unsafe. It’s best to drive slowly to a shop for a professional check—last time, I discovered it was due to aging wiring harnesses and got them replaced in time.
