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Engine Management Light On


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#1 Mark1eboy

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Posted 28 January 2014 - 06:27 PM

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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#2 Mr Singh

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Posted 28 January 2014 - 07:31 PM

have it plugged in to a diagnostic machine and it should give you a code



#3 Mark1eboy

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Posted 28 January 2014 - 07:55 PM

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.

#4 ben1191

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Posted 29 January 2014 - 01:19 AM

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?



#5 Mark1eboy

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Posted 29 January 2014 - 07:10 AM

I think so but apparently there's 2 sensors

#6 Mark1eboy

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Posted 31 January 2014 - 09:29 PM

It is the lambada sensor. How easy is it to sort and what do they cost??

#7 ben1191

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    If its got an engine,im interested.

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Posted 01 February 2014 - 08:40 AM

I believe it's just a spanner and a connector.part isn't dear either.

#8 Mark1eboy

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Posted 01 February 2014 - 08:44 AM

Ok thanks

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