3.0 Gasoline 2 codes P0171-Fuel trim Bank one condition and P0174- Fuel trim Bank two condition. What and how to fix the problem?

Asked by Eric Nov 25, 2013 at 08:41 PM about the 2004 BMW X5 3.0i AWD

Question type: Maintenance & Repair

Check your engine lights on. I tried lucas injector cleaner, put about 3 small bottles, did not work but everytime I add a bottle of STP gas treatment with each full tank, the check your engine light goes away and come back when I fill my tank with gas without adding STP gas treatment. A friend who's a mechanic helping me and run diagnostic and said O2 sensor X 4 working. I am planning to replace the fuel filter any idea or comment.

Eric answered 10 years ago

Finally, my mechanic found the problem. A hole in the rubber boot between the intake manifold and the air cleaner. I ordered the part and replace it..

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Hector answered 10 years ago

Hey good info.im going threw the same thing now.Is it expensive?

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3.0 Gasoline 2 codes P0171-Fuel trim Bank one condition and P0174- Fuel trim Bank two condition. What and how to fix the problem? 2 Answers

Check your engine lights on. I tried lucas injector cleaner, put about 3 small bottles, did not work but everytime I add a bottle of STP gas treatment with each full tank, the check your engine light ...

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3.0 Gasoline 2 codes P0171-Fuel trim Bank one condition and P0174- Fuel trim Bank two condition. What and how to fix the problem?

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3.0 Gasoline 2 codes P0171-Fuel trim Bank one condition and P0174- Fuel trim Bank two condition. What and how to fix the problem?

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