This code sets when the pcm (engine computer) has added as much extra. As was stated earlier about a misfire, wouldn't it throw a secondary code as a misfire code The first step to diagnosing and fixing ford trouble code p0171 or any other related code is to leave this part of the process to a qualified technician to resolve any issues with the fuel.
Troubleshooting P0171 Code: System Too Lean (Bank 1) - YouTube
Learn what the p0171 code means, common symptoms, and how to fix lean engine issues in ford, chevy with our complete diagnostic guide.
Learn what the p0171 code (system too lean bank 1) means, the common causes like vacuum leaks in the intake system, and how to diagnose and fix it fast.
What does ford p0171 actually mean Ford p0171 means your engine is running lean on bank 1 In plain english, there’s too much air and not enough fuel in the combustion mix Learn how to diagnose and repair the p0171 trouble code in your ford explorer with this expert guide
Get your vehicle running smoothly again. Discover the top 10 reasons your ford explorer is showing a p0171 code and learn effective solutions to fix this lean condition issue. If it was the fuel pump i would think you'd see p0171 along with p0174 Sounds like it might be a vacuum leak effecting only one bank
Btw, around 65 psi of fuel pressure is fine.
The p0171 code indicates a lean fuel mixture in the engine’s bank 1, which can cause reduced power, rough idling, and hesitation during acceleration Common causes of the p0171 code. System too lean (bank 1) and share common diagnostic steps and potential causes such as vacuum leaks, a dirty or faulty maf sensor, or fuel delivery issues The tool is inexpensive, and it can pull codes, erase codes, view live data, and even check the readiness monitors to see if your vehicle will pass inspection, if you have to do that in your state.
