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You may have a gas leak, when it catches fire you can claim on insurance. :>D Don't drive cars where you can smell gasoline. Anyway, your code tells you the car is running lean so the ECM is dumping more fuel to compensate.
What is code P0174? The Diagnostic trouble code (DTC) P0174 indicates 'System Too Lean (Bank 2). ' The P0174 engine code indicates that the air-fuel ratio in your vehicle is too lean. Before the gas in your car can combust and power your vehicle, it must first combine with oxygen.
Question edited for clarity. It is P-Zero 0, not P-oh O.
Please always include 'year make model' first 3 words, or it it is difficult to answer and some vehicles are slightly different or more precise and will show known issues.
Determining exactly what of the thousands of parts on a modern car is broken is as difficult as doing the repairs many times. IN this video you'll learn how to diagnose and fix error codes P0171 and P0174 on a 2001 Ford Escape, which indicate vacuum problems.http://www.lightdeal.co.uk/
P0171 - System too Lean (Bank 1)
P0174 - System too Lean (Bank 2)
P1451 - EVAP Control System Canister Vent Solenoid Circuit Malfunction
I'm afraid I don't have enough info to tell you how to fix the P1451 but I'm certain it's the cause of the other two codes.
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