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Discussion Starter #1
I just plugged in Alfa diag after having another engine fitted in garage, and I have 1 fault code PO500. I think it said speed sensor not plausible or something along those lines!

Does anyone know what could be the problem?


The revs seem to go up and down a lot also.
 

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I think that's P0500 Vehicle Speed Sensor Malfunction ...
 

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According to my ODBII list ... P0500 Vehicle Speed Sensor Malfunction
 

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Discussion Starter #8
So that would mean power train, standard speed sensor malfuntion!

So could it be a wire not connected or sensor is kaput?


I phoned garage and he said if it's still the same bring it in on Friday.
 

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Discussion Starter #10
I would have thought that the abs light on the dashboard would say the abs isn't operational!

Would it be worth cleaning it as the open type need to be cleaned regular!
 
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