can anyone tell me exactly what these codes mean i think its my o2 sensors only but i wanna be sure so can someone confirm this fully thanks

P0141 o2 sensor. B1S2 Heater Problem

p0155 o2 sensor. B2S1 Heater Problem

can anyone confirm these?

 

Sticky
http://forums.maxima.org/showthread.php?t=104931


P0141 = 0902 and P0155= 1001

0902
Diagnostic Trouble Code 0902 points to a problem with the Rear Heated Oxygen Sensor Heater.

The malfunction is detected when the current in the Oxygen Sensor heater circuit is out of the normal range.
Possible causes include ...
- the electrical harnesses
- the connector
- the Oxygen Sensor heaters

You may test the heater with an ohmmeter. This test is done with the engine off.

Raise the car and support it on sturdy jackstands. Slide under and disconnect the connector. Viewed with the connector latch at the 12 o'clock position, there are four terminals. They are numbered 1-2, top row, right to left and 3-4, bottom row, right to left. Be sure to measure the resistances of the Oxygen Sensor, not the harness which leads to the Engine Control Unit.

Measure the resistance between terminals 1 and 4.
The factory spec is 2.3-4.3 ohms at 77 degrees Fahrenheit.

Measure the resistance between terminals 2 and each of the other terminals.
The reading should be infinity (no connection).

Measure the resistance between terminals 3 and each of the other terminals.
The reading should be infinity (no connection).


Check fuse #31 (15 amps) in the passenger cabin fuse block. That fuse block has three columns of fuses.
The left-most column contains fuses 1 - 11, numbered from bottom to top.
The middle column contains fuses 12 - 26, numbered from bottom to top.
The right-most column contains fuses 27 - 40, numbered from bottom to top.

The numbers are molded into the plastic fuse block. They are not easy to read. A flashlight will be helpful.


1001

Front Left Htd 02 sensor heater

 

you need 2 o2 sensors.

B1S2 - bank 1 downstream sensor

B2S1 - bank 2 upstream sensor

 

ok thanks guys...digitized is that method to check where exactly on the sensor is the problem or is it to see if there is a problem somewhere else...i would just like to replace them so thats why i wanted to make sure it was only the sensors

 

I don't think you can pin point where the problem is coming from until you troubleshoot every possible "component" related to that error..

I would still go with replacing your sensors like JasonV mentionned.

 

ok man...well ill go ahead and change them..ill keep u guys informed..and thats for the sticky link..and all the help