2000 Toyota Tundra Engine Code P0171

I am getting a PO171 engine code. Since code P0171 System too lean bank 1 is generic code it can set on any gasoline engine but for various reasons this code is one of the most common codes to afflict V-type engines on Toyota applications. I am going to try and test the MAF per the method above.

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California cars use an airfuel sensor pre-cat and an O2 sensor post cat.

2000 toyota tundra engine code p0171. 2000 Toyota Tundra TRD 47. See if the air. Toyota Avalon XLS yr 2000 engine lights on.

There are two sensors in the vehicle Bank 1 Bank 2 Sensors. This code would come and go on occasion over the last year but 2 months ago I had the frame replaced and had new. Therefore this guide will briefly discuss the nature and causes of code P0171 as it relates to V-type Toyota engines.

2000 Toyota Tundra 34 P0171. Normally this is a MAF issue but anytime you have a vacuum leak anywhere on the engine the intake gets unmeasured air the measurement is done by the MAF. The auto repairs diagnosis time and labor rates vary by location vehicles make and model and even your engine type.

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. Isaiahhhg OP New Member. It also throws the code P0171 to let you know that it has done this.

If the leaking manifold gasket is confirmed following the diagnostic steps it must be replaced. Typically the code will be triggered by a lean condition in the engine. We drove around and.

P0171 is a lean code. Toyota Code P0171 Severity Moderate It is okay to drive your Toyota with P0171 for a short period of time but driving with this code for an extended period of time can overheat the engine and cause internal engine damage. Discussion Starter 1 Mar 12 2012.