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Codes P0646, P1682, P0691, P0693, P0686, P0687

8K views 2 replies 3 participants last post by  Mello112 
#1 ·
I have an ‘07 9-3 2.0T. I went to the dealership to have an airbag recall done, ecu checked for updates and have fog lights activated. The paper work they gave me said the tech II pulled codes P0646, P1682, P0691, P0693, P0686, P0687. Car runs ok when cold but when engine and outside temps get high, I could probably push the car faster than it will go on it’s own. When it’s hot I’m lucky if I get 1/4 boost in 1st, 2nd and 3rd gear and at best 3/4 boost in 4th and 5th. Any ideas? Car has 22X,XXX miles and is an automatic.
 
#3 ·
I have the same faults, what’s the first thing I should do. I brought used coils that are original and it ran great for a month and I received these faults. The car runs but at the top end starts to misfire. It’s not over heating and the fans work, but I noticed sometimes when I turn the key on the fans come on before I even start the engine!!!
 
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