Automobile fault code Mercedes-Benz U069987

Common reasons:

1, one or more cylinders are not working properly;

2. The sensor (such as air flow meter) is damaged;

3. An actuator (such as fuel injector and throttle valve) is damaged;

4. Lights up due to gearbox or other module failure;

5. Add inferior gasoline or gasoline with too many impurities;

6, high pressure bag or high pressure cylinder pipeline leakage, spark plug damage;

Universal solution:

1, the computer needs to adjust the fault code before judging the fault type and whether to replace the accessories;

2.W22 1 reported the adjustment error of the right exhaust camshaft. First, replace the improved electronic valve for camshaft adjustment. If the same fault is reported, remove the engine and replace the balance shaft.

3. Clean the fuel tank and replace the gasoline and gasoline tank.