Question about 2004 Toyota Tundra

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P0051 code, where is the sensor located, where is bank 2 sensor 1 located on truck, 2003 4.7 engine, tundra truck

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  • Anonymous Mar 18, 2014

    trying to locate bank 1 knock sensor on a 2003 toyota tundra sr5 4.7l v8 4wd

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Bank 2 is passenger side, sensor 1 is the one up closest to the exhaust manifold. Plug in type (just remove old and plug back into the wiring harness connector) is about $90 at Autozone. You can get a cheaper one that you splice but it's confusing to understand which wires to splice together. Don't forget to buy the special socket, $10, to remove and install the sensor. It's split up the side for the wires. Forget trying to use an open end wrench, socket is best.

Posted on Nov 18, 2009

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Bank 1 is drivers side bank
bank 2 is passenger side bank
sensor 1 indicates that it is the 1st sensor for bank 2

Posted on Oct 06, 2009

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How to reset check engine light?


First replace the bank 2 sensor 1 O2 sensor. p0051 is that sensor heater circuit. These codes are always the O2 sensor, unless you see the wires are melted against the exhaust manifold. Once replaced the light will eventually go out. A code reader or scanner will turn it off.

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1 Answer

Where is Bank 2 sensor 1 oxygen sensor on my 2007 tundra 5.7


Bank 1 is always the sameside of the engine as the number one cylinder.
Bank 2 is always the other side of the engine.
Sensor 1 is always before the cat
sensor 2 is always after the cat.

Cylinder number 1 on this engine is on the drivers side. So bank 2 is the passenger side of the engine and sensor 1 will be located before the catalytic converter.

Nov 17, 2015 | 2007 Toyota Tundra Limited

1 Answer

P0051 code, where is the sensor located, where is bank 2 sensor 1 located on isuzu rodeo


Google the code number and there will be all kinds of info on that including location of bankone and of course bank two.sensor ones are the upstream/closest to the manifold. Sensor twos are rear of the catalytic converters.usually close to the converters

Aug 22, 2014 | Cars & Trucks

1 Answer

I have error codes P0051 Bank 2 Sensor 1 , P0037 Bank 1 Sensor 2 and P0306 Cylinder 6 Misfire. Where are these two O2 sensors located?


Umm, "First thing to do though is to swap the wires on your coil packs" is a risky idea. This would most-likely cause a backfire and possibly cause severe damage. Swapping coils between cylinders and keeping wires matched to corresponding cylinders would give the intended result.

Nov 27, 2010 | 2003 Mazda MPV

2 Answers

Where is the O2 Sensor located on 2003 Ford Focus? Check Engine Light is on and trouble shooter device says the problem is in the O2 Sensor Heater Circuit, but where is it located.


The code will tell you which O2 sensor it is.
The code will point to either bank 1 sensor 1; bank 1 sensor 2; bank 2 sensor 1; bank 2 sensor 2.

From what I remember with a focus, it should only have 2 sensors, sensor 1 will be located before the cat, and sensor 2 will be located after the cat.

Oct 08, 2009 | 2003 Ford Focus

1 Answer

The check engine light is on the code is P0051 H02S heater control circuit low bank 2 sensor. i need to know how to do the repair


FIRST THING IS RESET THE CHECK ENGINE LIGHT AND SEE IF CODE RETURNS... RUN IT FOR A LITTLE TO MAKE SURE YOU DON'T HAVE BAD GAS.... IF IT STILL COMES ON REPLACE 02 SENSOR LOCATED IN THE EXHUAST PIPE.. THERE SHOULD BE TWO IN PIPE YOU WANT THE ONE CLOSEST TO THE END OF THE EXHUAST PIPE

Sep 01, 2009 | 2004 Toyota Tundra

1 Answer

O2 sensor code


They are up stream befor the cat or cats

Jan 11, 2009 | 2003 Toyota Tundra

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