Replace heated o2 sensor, sensor one, bank one on 2005 FX35

SOURCE: o2 sensor bank 2 sensor 2

Bank 2 will the the passenger side or right side and sensor 2 is the O2 sensor behind the catalytic converter.

Posted on Jan 28, 2009

warlock61

• 659 Answers

SOURCE: more 99 cougar problems

there is a fuse for the o2 heaters if one of the sensors blew the fuse they will all be out

Posted on Mar 01, 2009

SOURCE: 2002 Pontac Grand Prix GTP P0171 code engine stumbling at times

Bank 1 is the frt side exhaust manifold (did they say bank 1 sensor 1?),you can start by replacing that sensor,i would check the intake for leaks ,the gm 6cly. are known for bad intake gaskets,you will see oil coming out form the frt or rear of the intake,also check your atifreeze overflow bottle for bronwish sludge,which means that the oil is mixing with the antifreeze.A leaking intake could cause that lean condition.

Posted on Mar 29, 2009

SOURCE: location of bank 1 sensor 1 o2 sensor

Should be in the manifold on the back side closest to the firewall.

Posted on May 04, 2009

SOURCE: How to replace o2 sensor bank 1 sensor 1.

First, inspect the exhaust manifold. If there are any cracks present then you need to replace the manifold and gaskets, as well as the sensor. VERY common with Accents.

If the manifold has no cracks then continue on.

Run the car until it's at normal operating temperature then shut it off.

Using an o2 sensor socket and a ratchet with extension (all very cheap at auto parts stores) remove the o2 sensor. If it begins to turn hard on removal then stop and put it back in, you will need an exhaust manifold. You can take the plug off easy by using a flat head screwdriver to press the button that holds the plug together and wiggling the plug at the same time. Otherwise, put the new sensor in being careful to NOT TOUCH IT TO ANYTHING!

If the tip of the sensor contacts your skin, or anything else that has oils on it, the sensor will be rendered useless and you will have a check engine light.

Tighten the sensor down, plug it in. Drive to your local auto parts store and have them clear the code in the computer with their hand held scanner. This is usually free. If you did ok, you won't have a light come on and you will enjoy better gas mileage. If the light comes back on in a day or two then you messed something up or there was a crack in the manifold that you didn't catch.

Good luck!

Posted on Dec 07, 2009