2000 Toyota Tundra 4.7 Engine Code P0171

Of course this code can also signify a bad O2 sensor in bank 1.

2000 toyota tundra 4.7 engine code p0171. Toyota Service. Oftentimes a P0171 means that your Toyota is having trouble with a dirty or faulty mass airflow MAF sensor or a vacuum leak downstream of the MAF sensor perhaps in the PCV line or in the valve itself. If the P0171 is combined with the P0174 code its very likely that the problem is caused by an intake leak.

The technician was a nice guy and he explained to me that the service manual lists a number of things but. 2007 Tundra 57 4x4 115000 miles. If the problem persists the front oxygen O2 sensor may need to.

Therefore this guide will briefly discuss the nature and causes of code P0171 as it relates to V-type Toyota engines. Toyota service hooked up computer charged me 8500 and found code for failed bank 2 sensor. A P0171 code indicates a lean code.

If the brake booster goes bad and leaks engine vacuum it will affect the fuel trims and the computer will flag this P0171 lean code. Jump to Latest Follow 1 - 7 of 7 Posts. END OF SPECIAL NOTES.

The brake booster is vacuum assisted and works off of engine vacuum. Only after all those can be eliminated do you look at the fuel-air sensor s. 2000 Toyota Tundra TRD 47.

Joined May 27 2010 4 Posts. Reconnect any disconnected vacuum lines and replace any damaged vacuum lines that are leaking then use FIXD to clear check engine light code P0171. A P0171 means that your Toyota is having trouble with a dirty or faulty mass air flow MAF sensor or a vacuum leak downstream of the MAF sensor but this code can also signify a bad O2 sensor in the exhaust on bank 1the one closest to the engine on bank 1 Also P0171 code can be tripped by a plugged fuel injector by a dirty fuel filter causing low fuel pressure or even an exhaust leak before the.