99pearlGXE

I am a bit bummed.

My journey began with codes P0158/P0159. It was frustrating at first because my 99 GXE Calif spec has 4 O2 sensors and the folks at the dealership and Autozone never seemed quite sure which one was causing the problem -- or at least left me wondering if they really knew what they were talking about.

In any case, Maxima-4DSC was a super-star and pointed me in the direction of the O2 near the 90 degree bend and had me go to http://www.jatan.net/02sensor1.jpg for a revealing picture of all 4 O2 sensors on a Cali-spec.

With the benefit of this helping hand, I installed a new Bosch #13348 2 weeks ago. It was the Bank 2 Sensor 2 sensor, the 2nd of 4 in series front to back and located adjuacent to the 90 degree curve in the tube assembly.

I was tickled. The codes disappeared and all was well.

Then 2 day ago, another code. P0161 (or 1002 based on the blinking lights). The stress emerged when I hooked up the computer code reader, obtained the P0161 code, AND the displayed indicated that the Bank 2 Sensor 2 was again the problem. This time it read that the "O2 sensor heater circuit malfunction."

Can this be possible??!!?? I just put in a new Bosch. Am I now supposed to take out the new part, return it to Pep Boys, claim that it is not working, hope that they will replace, then re-install, then hope that I can run code-free.

Does anyone have experience with the Calif-spec O2 sensors? Am I misinterpreting the P0161 code?

Thanks, in advance!!!

99pearlGXE

Does anyone have experience with the P0161 code for a Cali-spec Maxima? Is it the 2nd O2 sensor of 4 in terms of front to back placement?? Thx.

Tatanko

iTrader: (34)

I'm going to say you almost had to have gotten the correct sensor if the original codes went away. But, then again, my current O2 sensor code sometimes goes away for a day or two and then comes back (I'm replacing it today, though, anyway)

99pearlGXE

Thanks, Tatanko. Hope all goes well with your O2 replacement. As I noted, I thought all was going well with mine when the codes disappeared. Now stymied by the appearance of a new code that appears to point to a problem with the recently replaced O2. For me, the problem on my Cali-spec 99 was the 2nd sensor (bank 2, sensor 2) in series front to back of 4 sensors.

I am at this moment hoping that a member with a Calif-spec 99 or 4th generation with experience with the P0161 code will appear and help me pinpoint the O2 that is the problem. Anyone????

UncleMax98

You can check the O2 heater before removing it from the car. Measure the resistance (with a DMM) between the two white wires. If it is out of range, then it is the bad O2. I think a value around 5 - 10 ohm is good. You can check the resistance of the other sensors for comparison.

rocketrich

I have a'98 Maxima 5 spd, Cal spec. I too replaced with Bosch sensors, they lasted about 1 year and went bad, probably because of the splices I had to do to install them. Went back and paid the $$$ for the stock part from the Nissan dealer complete with the correct wiring harness/connections. Good as gold! My lesson, use the exact OEM part from the dealer for electrical bits. OBD II is some picky software and the hassle of those Bosch parts wasn't worth the hassle of troubleshooting, repairing and replacing the multiple times I had to. Rich

99pearlGXE

As suggested, I will try testing the o2 with my multi-meter before testing.

A bit discouraged to hear of the problems with the Bosch and the vote for Nissan parts. I hopefully will not encounter the same trouble, as I purchased the more expensive Bosch with the made to fit connector.

Anyone have any experience with the P0161 code and knowledge of which specific sensor (of 4 on the Cali-spec 99 maxima) is the culprit. Bank 2, sensor 2 to me means the 2nd one of four front to back at the 90 degree curve. Unfortunately, this is the very same one I just replaced with a new Bosch to fix the P0158/P0159 codes.

Thanks!!!