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Deciphering Engine Code P0171 A Diagnostic Journey

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The check engine code was P0171, a lean fuel trim. He cleared the code and checked for air leaks and said the car needed a new PCV valve and he installed one. It's very possible that you do have a vacuum leak. The only real way to find out is to get a hold of a scanner that you can monitor the O2< ... I was able to get enough gas to get to a decent gas station to fill the tank. On my way home I got a check engine light and the code was P0171( ... Chevy / GM P0171 or P0174 System To Lean Bank 1 Bank 2 · Check Engine Light? · Engine Fault Code P0171 - System Too Lean Bank 1! · P0171 Trouble ... The reading is too lean (i.e. too much air or not enough fuel). P0171 is a bank one reading lean, P0172 is for bank two reading lean. If the PCM is saying is ... P0171 is System too lean, (Fuel Trim) bank 1 ... Here are your trouble areas ... Air Intake hose, loose or cracked ... Fuel line pressure ... Injector ... This code is triggered by the first downstream (front) O2 sensor. The sensor provides a reading of the air:fuel ratio leaving the engine's cylinders, and the ... Based on the information you provided, it seems like your vehicle is displaying a P0171 error code, which typically indicates a problem with the ... Check the engine air intake duct for leaks/tears/holes, especially in the folds. It's a common source of a Murano vacuum leaks... From TSB, P0171 - System Too Lean (Bank 1)The Adaptive Fuel Strategy continuously monitors fuel delivery hardware. The code is set when the ...
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