Mercedes-Benz 272 engine shows fault code p0303. This situation shows that the mixture of the engine is too rich, which is caused by too much mud and carbon accumulation in the throttle of the engine for a long time. To clear this fault code, it is necessary to clean the throttle of the vehicle. After cleaning the throttle, it can not only clear the fault code, but also reduce the fuel consumption of the vehicle and increase the engine power. The steps are as follows:

1. Remove the air filter of Mercedes-Benz 272 engine.

2. After the air filter of Mercedes-Benz 272 engine was removed, the throttle of Mercedes-Benz 272 engine was exposed, and the throttle was closed.

3. Insert the wrench into the throttle of Mercedes-Benz 272 engine and push the throttle open.

4. Spray the accelerator cleaner into the accelerator of Mercedes-Benz 272 engine and brush it back and forth with a toothbrush.

5. After cleaning, wipe the inside with a paper towel.

6. Replace the air inlet of the air filter of Mercedes-Benz 272 engine to its original position, and the operation is completed.

Mercedes-Benz is a world-famous German automobile brand, founded in 1900, headquartered in Stuttgart, and co-founded by karl benz and gottlieb daimler. Mercedes-Benz is famous for its high-quality and high-performance automobile products. Besides luxury cars, Mercedes-Benz is also the most famous manufacturer of buses and heavy trucks in the world. At present, Mercedes-Benz is a division of Daimler Company.