2000 Toyota Tundra Code P0171

The code is thrown when the oxygen sensors detect that theres not enough oxygen in the exhaust system.

2000 toyota tundra code p0171. Tech tested AF sensor on scan tool and sensor is not responding to lean command. STFT 08 LTFT 555 BANK 2. 2015 Toyota Tundra DC SR5 57L Joined Jan 23.

Open the hood and locate the mass air flow sensor. The P0174P0171 codes Fuel system too lean banks 1 and 2 usually means a vacuum leak from the intake manifold gasket a vacuum hose PCV hose etc or the MAF is dirty or theres a fuel delivery problem clogged injectors fuel pump going out etc. Joined Nov 18 2011 1 Posts.

CEL ON WITH P0171174 CODES RPM. P0171 TOYOTA code tech notes If the P0171 is combined with the P0174 code its very likely that the problem is caused by an intake leak. Tundra P0171 Code Defined.

2000 Toyota Tundra 34 P0171. OBD II fault code P0171 is a generic code that is defined as System too lean bank 1 or sometimes as Fuel trim FT system too lean bank 1and is set when the PCM Powertrain Control Module detects a lean airfuel. Therefore this guide will briefly discuss the nature and causes of code P0171 as it relates to V-type Toyota engines.

While watching the fuel trims on your scanner engine fully warmed up step on the brake pedal. Discussion Starter 1 Mar 12 2012. Or maybe used your own OBD scanner to extract the car faults.

Looking at my short and long term fuel trim percentages they correlate away from a vacuum leak. I am getting a PO171 engine code. Only after all those can be eliminated do you look at the fuel-air sensor s.