Thread: p0141/o2 sensor questions

Hello,


The O2 sensor code is showing that the heater portion of the 02 sensor is not working correctly. There is nothing that can make that go bad quicker than normal. So you're assumption is correct. All that 02 is there for is to monitor the cat to ensure it is working correctly.



The other code is a lean condition code associated with the UNMETERED air entering the engine.




They have nothing to do with each other.




Also on the o2 sensor. There should be 4 wires, the brown two are the heating element wires. So just trace those to make sure there are no cut's in them. If there both cut don't worry about hooking them back up in the right order because they have no polarity.



My opinion is you need to check for what you mentioned (cut wires) and if nothing is found replace the o2 sensor.

i can answer a couple things for someone in the future .. who still owns this ****ty car
I just fixed this code for different problem i had my 05 grand prix. the cable was loose and hanging low. it finally caught something and the wiring harnessess disconnected. i so so ****en lucky it didnt rip everything out.
the sensor is on the exhaust. u dont have to go under the car to see it. but i cant reach it without jacking it up. to find it:
- when ur looking from the front end it's about lined up with the oil filter. maybe <1 ft towards center
-on the side view, its about 2 feet behind the right front tire
i just had to connect it back. if ur sensor/heater is bad, replace it ur self or at a gargae. if u have the cat problem that i had b4 then i hope ur under emissions warranty. get off ur ass and take it into the dealer