How to change sensor 1 bank 1 for Corolla 2004 CE.

[benazeer.abbas]

Hello members,

My OBDII light is steady, I checked the error code, it is P0139 which means señor 1 bank 1 is faulty. I tried to locate it but couldn't. Can someone help to locate it. And where should I buy new one ( online and in-store). What socket wrench would I need? I live in Canada.

Another question is regarding light bulb in transmission ( P R N D D1 and D2). It's not turning on fro where I can buy this. Thank you.

Ben

[Brian R.]

For the best price: 1) Get the part number for the correct sensor from a dealer parts department using your VIN; 2) Cross-reference the Toyota part number to the DENSO part number at the DENSO website:

http://www.densoproducts.com/Den-Aut-l1351.aspx

3) Search for the DENSO part number at Amazon.com and buy it there.

Toyota 4-cylinder sensor 1 is usually on the top of the exhaust manifold at the front of the engine near the radiator. They are most commonly held in place with two 10-mm bolts on a flange. You will probably have to seriously heat the exhaust manifold with a propane torch just before removing the bolts, after liberally applying some penetrating oil (such as PB Blaster or Liquid Wrench) and letting it soak in for a few hours. WD40 is not a penetrating oil, so don't bother with it. If you break those bolts, you are in trouble.

Buy the bulb at a Toyota dealer parts department.