Schematic diagram of modern Sonata 9 fault light

Generally speaking, there are many reasons why modern Sonata Nine epb lights are on, including the following: 1, air leakage in the air intake system causes the engine control unit to light the epb lights after detecting the problem; 2. When the EPC light is found to be on, the decoder can be used to check and troubleshoot the fault; 3. Practical problems existing in various parts or pipelines of engine electronic throttle system; 4. For other comprehensive reasons, the oil should be filled in strict accordance with the standard. Too much oil will affect the concentration of mixed gas, leading to abnormal EPC lamp and low cylinder compression pressure, which will also lead to such failures.