Maxima Forums - View Single Post - 5th Gen "I AM NEW HERE BUT HAVE A QUESTION" thread

tech123 · 01-06-2008, 02:29 PM

I just bought a 2000 maxima

First thing I found was that the previous owner had removed the ses light so I replaced it and read the codes and came up with p0141 and p0155. I started by replacing the front two o2's when I put on my y-pipe this weekend. Cleared the codes and p0155 was still coming up (p0141 was as well but that senors heater resistance is to high after checking it)

Checked on the TSB's and read the wire brake problem on the wiring harness by the strut tower. So I went in this morning to try to source out the problem. Went to all data and started to follow step by step there instructions on how to check the sensor before looking for the wire break problem. Sensor resistance checks out ok. It have voltage where it should and there is continuity between pin 2 of the ecu and pin 3 of the o2. So I than switched the two new o2's to just double check that it wasn't an bad new o2. Still got the code with the back o2 in the front.

Now I start removing the harness by the strut tower. pulled the covering off from where it splits out to the back o2 and other sensors to down by where it goes through the fire wall. Found no broken or stripped wires after looking for about an hour. Re covered all the wires and sealed it back up and re checked everything with the scanner. Still getting the p0155. So I cleanned everything up came home and wrote this post.

Any one have any suggestions on what maybe going on or if they think the break could possibly be in another section of the harness that someone else may have found before? All fuses are good in the interior and engine fuse pannles. Didn't have time today but I am thinking or running a new wire from pin 2 to pin 3 and seeing if my problem goes away. Any help is greatly appreciated.

Thanks Tech123

01-06-2008, 02:29 PM	#4525
tech123 Newbie - Just Registered Join Date: Dec 2007 Location: kitchener iTrader: (0) Posts: 2	00 max 02 heater code p0155 I just bought a 2000 maxima First thing I found was that the previous owner had removed the ses light so I replaced it and read the codes and came up with p0141 and p0155. I started by replacing the front two o2's when I put on my y-pipe this weekend. Cleared the codes and p0155 was still coming up (p0141 was as well but that senors heater resistance is to high after checking it) Checked on the TSB's and read the wire brake problem on the wiring harness by the strut tower. So I went in this morning to try to source out the problem. Went to all data and started to follow step by step there instructions on how to check the sensor before looking for the wire break problem. Sensor resistance checks out ok. It have voltage where it should and there is continuity between pin 2 of the ecu and pin 3 of the o2. So I than switched the two new o2's to just double check that it wasn't an bad new o2. Still got the code with the back o2 in the front. Now I start removing the harness by the strut tower. pulled the covering off from where it splits out to the back o2 and other sensors to down by where it goes through the fire wall. Found no broken or stripped wires after looking for about an hour. Re covered all the wires and sealed it back up and re checked everything with the scanner. Still getting the p0155. So I cleanned everything up came home and wrote this post. Any one have any suggestions on what maybe going on or if they think the break could possibly be in another section of the harness that someone else may have found before? All fuses are good in the interior and engine fuse pannles. Didn't have time today but I am thinking or running a new wire from pin 2 to pin 3 and seeing if my problem goes away. Any help is greatly appreciated. Thanks Tech123 __________________ 2000 maxima y pipe, tein s techs