Fuel Composition Sensor (P0178) - SOLVED

OR VietVet

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So, parts replacement DID fix the problem? Roadtest results and how long or far on the roadtest?
 
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RAMurphy

RAMurphy

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@OR VietVet So for reference, prior to replacing I cleared the code several times and would get the code again within driving 2-5 miles after my baby was warmed up. I would get two codes, both P0178, one actual code and then the pending. After the change, I still smell like gasoline, no codes after 5+ miles.
 

OR VietVet

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Drive it. Unless you have a fuel leak from you messing up the install. You are still smelling the fuel spill.
 
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Fless

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It would be interesting to see what the ethanol content reads now, especially if you know how much (if any) is in the tank. Maybe fuel trims, too.
 

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