Fuel composition sensor out of range - Alfa Romeo Forum
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Join Date: Jun 2008
Location: Ireland
County: Wicklow
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Alfa 156 1.8 TS

Fuel composition sensor out of range

I'm getting a repeating fault on my 1.8 156.If I clear the fault it comes back usually after a day or 2. What I know is it's effecting short term fuel trim first then long term. When the fault appears long term fuel trim is logged as 25%. O2 sensors seem to be steady enough and I've just replaced the airbox as the original was damaged. Any help or even a location for the fuel composition sensor much appreciated. (I'm using gendan engine check for diagnostics)
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composition , fuel , range , sensor

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