my Audi A2 1.6fsi shows fault code relating to knox and lambda sensors are the two connected in any way. Mechanic said that it was one of the lambda sensors first now he is referring to a knox sensor.
...WAS P0171 COULD THEY BE RELATED....ALSO CAR IS SHIFTING REAL ROUGH Engine light on means that your lambda probe is malfunctioning just raplace it and it will come off,or the mixture of gases and gas ...
...long or too high fuel pressure. This is the corrective strategy the ECU uses to trim the fuel to lambda. ie: 14 to 1.C/0% If it is too lean, it would read + instead of -
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