You need to check it while the engine is make maximum horse power Ford trouble code p0171 is one of a series of diagnostic trouble codes (dtcs) that are standard powertrain codes You check that when the throttle is wide open.
P0171 Code Ford F150: Meaning, Symptoms, & Fixes
P0171 plus p0174, idle trims over +25%, and smoke pouring from the elbow, that’s your case
Ford’s own service literature points techs to inspect pcv.
I'm troubleshooting a p0171 & p0174 code on my truck and just wanted to make sure i'm on the right track My scan tool is pretty basic but i'm hoping i can. They should never have taken it off, so they're stuck with providing you a free replacement now (yes, i've worked at many shops, and that's how i'd look at the situation even if i was the one.
The p0171 code indicates a lean fuel mixture on bank 1, often caused by vacuum leaks, faulty maf sensor, or fuel delivery problems Start by inspecting all vacuum hoses for cracks or disconnections. Well, the p0171 happened after i replaced the bugged up filter with one that was sitting on the shelf, used but fairly clean Since the maf measures air flow and in theory any air leak past the maf would cause.
Learn how to diagnose and fix the p0171 code in your ford f150 with this comprehensive guide, including common causes and detailed solutions.
Problem started around 90,000 miles I've cleared the codes a bunch of times after each attempted fix, no luck P0171 and p0174 both indicate that there is a lean condition present in the vehicle By themselves, they are some of the most common obd ii codes.
A lean code or codes suggest that there surely is too. I drove it for a few days and now i have a check engine light. P0171 & p0174 codes fixed by prosenau » tue jun 22, 2004 4:04 pm p0171 & p0174 codes while my mechanic has seen the maf sensor get gunked up and need careful cleaning, he tells.
