my question is if you have a manifold leak,(AHHHH!:hissyfit: I HATE THAT NOISE!) how likely would it be that it would cause the ecu to throw a p0155 (oxygen sensor heater) code? and if it is likely then why?:beatsme:

Not likely. The sensor heater core failure is very specific. It is a wear item (expected life, 100,000 miles). Codes related to exhaust leaks, fuel-air trim levels, etc are different.

Replace both banks at the same time. Amazon has the best price. You didn't say what model year/engine your Tundra has, so I can't give you the Denso model number.

Not likely. The sensor heater core failure is very specific. It is a wear item (expected life, 100,000 miles). Codes related to exhaust leaks, fuel-air trim levels, etc are different.

Replace both banks at the same time. Amazon has the best price. You didn't say what model year/engine your Tundra has, so I can't give you the Denso model number.she's a 2000 sr5 trd. i'll have to check to to see what engine. i know it's an early 2000. i am gonna try and sleep till at least noon tomorrow so it'll be after that lol.

i had a pretty bad Mani leak on mine and it never threw a code at me for the 3 months before i changed it.. it started as a pretty tiny leak and was a hole in the mani by the time i had the time to fix it so.. Not sure if it will help you at all, just another situation

Remmy, it is a 2UZFE.

Remmy, it is a 2UZFE.

Then you require two of the Denso #234-4169. Get em from Amazon (http://www.amazon.com/Denso-234-4169-Oxygen-Sensor-Ratio/dp/B000C5SG54/ref=sr_1_1?ie=UTF8&qid=1341431618&sr=8-1&keywords=denso+234-4169). You'll also need an oxygen sensor socket (http://www.amazon.com/Lisle-12100-Oxygen-Sensor-Socket/dp/B0009OMYA6/ref=sr_1_3?ie=UTF8&qid=1341431618&sr=8-3&keywords=denso+234-4169) to remove and reinstall.

Here's my writeup on the DIY (http://www.tundrasolutions.com/forums/engine-and-drivetrain/156576-p0135-check-engine-code-can-i/#post1197269).

Get that exhaust leak fixed ASAP. It causes all kinds of operating issues and will start to affect catalyst function, O2 sensor readings, etc.

Thanks Remmy!