WebEXPERT. P0171 lean condition: A lean fuel condition can be caused by: * Low fuel pressure due to a weak pump or leaky fuel pressure regulator. (Use a fuel pressure gauge to check fuel pressure at idle) * Dirty fuel injectors. (Try cleaning the injectors) WebIt is possible that the oxygen sensor is bad causing the code P0171 lean. First you should check for a vacuum leak. Some common areas of vacuum leaks on that engine are the …
P0171 Pontiac: Code Meaning, Causes, Symptoms,
Web2003 PONTIAC GRAND AM; ... new spark plug wires, new spark plugs, fixed exhaust leak, new PCV valve, new MAP sensor. I am still firing a p0171 code. It was happening frequently but since the MAP sensor replacement it's only happening at very low speed. I will list the freeze frame details: fuel system- CL, calc load- 3.1, ect- 122, stft- 0 ... WebNov 30, 2013 · P0171 went away since it was able to regulate but of course I had a code for MAF unplugged. Car ran fine but surged a little when quickly releasing the brake pedal. I … fancy fox murrysville
P0171 PONTIAC Fuel Trim System Lean Bank 1 – Car OBD Codes
WebWhat does this mean? OBD2 Code P0101 Pontiac definition: Basically this means that there is a problem with the Mass Air Flow (MAF) sensor or circuit. The PCM detects that the actual MAF sensor frequency signal is not within a predetermined range of the calculated MAF value for more than 4.0 seconds. Web1999 Grand Am P0171 Trouble Code The Check Engine Soon light recently came on in my 1999 Pontiac Grand Am. Perhaps by coincidence (?), this happened right after I started getting intermittent "Trac Off" and "Brake" dash warning lights. The brakes sem to work fine, by the way, and I have previosuly had a coupe of ABS sensors replced along with new … WebJun 5, 2008 · I ran it by Autozone to have them read the code and it came out P0171 - Bank 1 - System too lean. I've changed my Fuel and Air Filters, checked for a vacuum leak, … core team formation