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P0171 - Bank 1 too lean


Andyreet
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to do a bit more diagnosis, if you're up for it, if you use the graphing function in vcds, you can get more info. do a track at idle of the lambda or oxygen sensor (depending on what it's called in the app-cant remember...). wait til the engine is warmed up and get a plot of the voltage. post the pic here with the crank sensor timing as a reference and we'll be able to tell you exactly whats going on in the engine. :)

 

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