2000 Toyota Tundra Code P0171

So your cars CEL always check Engine Light is on and also you had the codes scanned at a local parts shop.

2000 toyota tundra code p0171. When there are more than 147 parts air to 1 part fuel in the air-fuel mixture a lean condition exists and code P0171 is triggered. Driving a car with the code P0171 can cause more damage to the engine over time as when the engine runs lean the combustion temperature is higher. Tech tested AF sensor on scan tool and sensor is not responding to lean command.

Joined Nov 18 2011 1 Posts. I always just use CRC Mass Airflow sensor cleaner just make sure you dont touch the wires. Jump to Latest Follow 1 - 3 of 3 Posts.

STFT 39 LTFT 547 However currently it is running as follows. Discussion Starter 1 Mar 12 2012. If the problem persists the front oxygen O2 sensor may need to be replaced.

Only after all those can be eliminated do you look at the fuel-air sensor s. 2015 Toyota Tundra DC SR5 57L Joined Jan 23. If there are no intake leaks the next step is to replace the air filter and clean the airflow meter.

Filthyphil Dec 27 2018 2. I arrived to a 2000 Toyota Tundra 34 running rough with a P0171 that was cleared by the shop. If the problem persists the front oxygen O2 sensor may need to be replaced.

If it is a 34 or a 30 the six cyl will have a left bank and a right bank for each head of the engine and each bank should have its own o2 sensor before and after the cat especially if it is the system that has two cats one for each bank Hints the error code p0171 system to. They had in hand fuel fouled spark plugs and no explanation as to why. System too lean Bank 1.