What is the reason for the Geely Boyue failing to start and displaying communication loss?
2 Answers
Geely Boyue failing to start and displaying communication loss may be caused by engine oil circuit, electrical circuit, and mechanical faults. The specific explanations are as follows: 1. Oil circuit fault: The main fault is low gasoline pressure and poor atomization. 2. Electrical circuit fault: This is due to excessive spark plug electrode gap, reduced ignition energy from the ignition coil, or short circuit/open circuit in the cylinder wires. 3. Mechanical fault: For example, whether the valve is not tightly closed, or whether there is excessive carbon buildup inside the engine. The cold start injector will be absorbed by carbon deposits, resulting in a too-lean cold start mixture, making it difficult to start. When there is excessive carbon buildup inside the engine, gasoline will spray out of the cylinder. During cold start, the injector will be absorbed by carbon deposits, causing the cold start mixture to be too lean, making it difficult to start. It is not easy to start the car until the gasoline absorbed by carbon deposits is saturated. After the gasoline is sucked into the cylinder by the engine's vacuum suction and burned, the gasoline adsorbed on the carbon deposits burns, making the mixture rich. The engine's combustible mixture is sometimes lean and sometimes rich, causing idle shaking after cold start. Since lower temperatures require more oil for cold start, more carbon deposits will affect the smoothness of cold start.
As a seasoned technician, I've encountered many Geely Boyue owners complaining about failure to start with a 'communication loss' warning, which is mostly caused by in-vehicle network communication faults. The Boyue's communication system relies on CAN bus to connect various modules, such as the engine control unit or body control module. If a module loses power, has a short circuit, or a loose connector, signals can't be transmitted, resulting in a no-start condition. Common causes include aging batteries with insufficient voltage, blown fuses, or damaged communication modules. Last time when helping a customer with a similar issue, testing showed the battery was only at 10% charge—replacing it fixed the problem. Sometimes it's a software bug; disconnecting the negative terminal to reset the ECU might help. For safety, don't attempt DIY repairs for such faults—it's best to visit a professional workshop to read fault codes with a diagnostic tool for precise solutions. Regular battery checks and communication line maintenance can prevent such issues.
