hi i have a 52plate c180 2.0 petrol and the engine management light has come on i have had it on a test machine and it is saying the fault is the lambda sensor bank 1 sensor 1 i have had this replaced and the light came back on so i have also changed the rear lambda sensor and the maf sensor also i had the oil and filter and air filter changed and spark plugs and the engine management light is still on the car is running at 6% on the emissions and prob doing around 8mpg on a good day the fault is still reading bank 1 sensor 1 so i changed the front lambda sensor again just to be sure it wasnt that and the light is still on
any ideas????
regards mark