What caused the yellow light of Mercedes a200l engine failure?

The following are the specific reasons and solutions for the yellow light failure of Mercedes-Benz a200l engine: 1, car carbon deposition leads to ignition difficulties. When idling, it is accompanied by slight jitter. Just clean the throttle and fuel injectors. 2. The ignition energy of the spark plug is very weak. If the spark plug is not replaced after the maintenance period, the ignition energy of the spark plug will drop seriously, resulting in a fire. 3. Insufficient low pressure in the fuel circuit. Insufficient oil pressure in low-pressure oil circuit directly leads to secondary ignition of engine. Check the fuel pressure regulator, gasoline pump, gasoline filter and internal pipeline. 4. The battery is dead. You need to find a car or other battery to charge. 5. Engine timing is wrong. The engine timing does not match the engine, and some models of engines may cause tooth jumping when replacing the generator belt, which may lead to difficulty in striking the fire.