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Mark1eboy

Engine Management Light On

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Hi can anyone help. I've a 2003 focus st170. The engine management light has come on. I've done a self diagnostic and it's coming up with no dtc codes. Can anyone help?

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I have and it's coming up as an emissions sensor. Not sure if it EGR valve or the sensor near the cat. But I thought the car would have diagnosed a fault code on its own that way I would know which sensor it was.

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I have and it's coming up as an emissions sensor. Not sure if it EGR valve or the sensor near the cat. But I thought the car would have diagnosed a fault code on its own that way I would know which sensor it was.

Isnt the emissions sensor the lambda sensor?

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