Why is the Audi engine preheating light on?

[ReidMarie]

Audi engine preheating light on indicates that there is a fault in the engine preheating system, and it is necessary to go to a repair shop for timely inspection and repair to eliminate the fault. Solution: Check whether the relevant sensors of the engine are normal, and check the relevant circuits for short circuits or grounding phenomena. It is recommended to go to a 4S shop for repair. At this time, if the ECU is not powered off, the fault code will be recorded. It is recommended to go to a 4S shop for repair, and a fault code reader can be used to determine the fault code and the corresponding fault content. Precautions for engine preheating: Both electronically controlled diesel engines and direct injection diesel engines require preheating. The preheating time of the engine is limited. If the engine is heated for a long time, the diesel engine will do useless work, which not only wastes fuel but also fails to meet environmental protection requirements. Try not to start the engine too much in a cold state. Excessive starting times of a diesel engine will increase the wear of moving parts and shorten the service life of components and the engine.