2004 Ford F150 "171 system lean bank 1" Questions

...problem. first check out for o2 sensor if its faulty this can show up.but if its proper.Evaporative emission control system leak very small 171 System too lean (bank 1) 174 System too lean (bank

SYSTEM.EXHAUST LEAKS BEFORE OR NEAR WHERE THE HO2S IS MOUNTED.FUEL INJECTORS RESTRICTED OR NOT GETTING ENOUGH FUEL WEAK FUEL PUMP. LEAKING EGR GASKET OR LEAKING EGR VALVE DIAPHRAM.MASS AIR FLOW SENSOR

171 bank 1 system 2 lean. is this the downward passenger side o2 sensor and if so where is it located and does it take a special tool to change? thanx, steve Bank one,sensor 1 O2 sensor is on the pass

What is code 171 and 174 on a 01 Ford Sport Trac 171 is system too lean (bank 1) 174 is system too lean (bank 2) you might have a vacuum leak or bad injector o rings

171-HEGO sensor unable of snitch cylinder bank #1 fuel system at adaptive limit (1990 on) code 174 hego sensor snitching too slow, cylinder bank #1 (1990) switch, we run off snitches. 171 174 banks 1

171= SYSTEM TOO LEAN (BANK 1) PO 174= SYSTEM TOO LEAN (BANK 2) I WOULD SAY YOU HAVE FAULTY OXYGEN SENSORS CAUSING THE ENGINE TO RUN TOO LEAN REPLACE THEM AND YOU SHOULD BE BACK IN BUISNESS NEVER THROW

...171 174 on 1997 expedition found fuel filter clogged installed new one vehicle accelerates better but studders while driving Trouble code P0171 means: Fuel System Too Lean (Cylinder Bank 1) Trouble ...

171 AND 174 fault code p0171 is system too lean bank 1.................. intake/exhaust leak. air system MAF/VAF sensor. Fuel pressure/pump , injectors HOS2.fault code p0174 is system too lean bank 2.

...on it, gently blow off debris taking care not to damamge the wires on the sensor. also check forvaccum leaks as this can cause a lean condition code po 171 system lean on bank one on 2002 buick ...

...171 Bank 1 System too lean, 0174; Bank 2 system too lean, Po131 and 137 oxygen sensor curcuit low voltage for bank 1 sensor 1 and 2 and also codes Po151 and 187 oxygen sensor Bank 2 sensor 1 and 2. ...