Question about Toyota Highlander
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: dtc codes p0155 & p0051
I had the same problem and found out I was sold the wrong sensor, my 4.0 has four, they are all different, when you install a new sensor, you must make sure you clear the trouble code before you start the engine, ignition on engine off, that should do it, it worked for me, also if you have your own scanner and can erase the codes yourself, the wrong 02 sensor will turn engine light on with cold start, then after I erased the code it would stay off all day until the next cold start, thats when I found out my new 02 sensor was for bank 1 sensor 2, and not bank 2 sensor 1, hope this helps
Posted on Jan 19, 2009
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
Posted on Sep 01, 2009
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
what?? bank 2 is the drivers side of the engine sensor 1 is located before the cat conv next to the frame by the trans bell housing very tight location but is possible to change need a o2 socket that looks like a line wrench but beware if its seized you will have to heat with a torch or you will rip the threads out of the pipe/cat
Posted on Jul 16, 2010
It sounds like you have an air leak in the air horn, check out the air filter compartment,make sure it is on there tight, no cracks, make sure there are no cracks in the air horn, the rubber to the throttle, make sure all the hoses are connected, and not making noises. One thing you can do is spry wd-40 on the intake manifold at the gasket line and make sure it doesn't leak there, if it levels out or changes idle it is leaking. A spray bottle of water will do the same thing. Check it out.
Posted on Jul 18, 2010
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