Has anyone seen DTC codes P0132 and P0152 at the same time? I have an '03 with Megan Racing headers, Borla exhaust, and Injen cold air intake. Last week we had a nasty snow storm that left huge layers of compacted ice all over the roads. It was worse than driving off-road . I noticed during my "high vibration" ride home from work that the car felt like it was losing power, then after a short while, it would pick up again. The next day on my way back to work, the MIL light came on. My code reader showed P0132 and P0152, high O2 sensor voltage on sensor 1, banks 1 and 2 (rich condition). What's the possibility that both of the sensors broke under the high vibration conditions? I've been racking my brain trying to think of what else might cause this. I checked out the wiring and nothing is broken. After clearing the codes, the car runs like crap. Going down the road, there are times when pressing the accelerator has no effect whatsoever. It even stalled out once while idling in the garage. I'm scheduled at the shop to have the front O2 sensors replaced tomorrow. I'll let you know what happens.

 

Wouldn't you suspect a problem with the MAF first?
Maybe you over oiled the air filter.
O2 sensor failures are rare, especially 2 at the same time.

 

The problem started after driving on the extremely rough roads. The MAF output seems to be ok according to my OBD scanner. (I have the Actron CP9580.) I'm just wondering if the extreme vibration broke the ceramic inside the O2 sensors. They do have a warning in the service manual to not use a sensor that has been dropped less than 1/2 meter onto a hard surface. Attached is an OBD log from driving down the road and back.

 

Just how bad was this rough road? We have some of the worst roads around, I've gotten air a few times, I've done 40ish on gravel, driven down dirt and sand roads, even through a few yards and a field in my Z.

If rough roads were going to damage an O2 sensor I would have replaced mine already. 107k on them and counting.

 

My neck was actually kind of hurting and I was pissed off by the time I got home. It's the roughest ride I ever remember having. I used to go off-roading in Hollister, CA with my roommate at the time and it was never that bad.

 

Started it up this morning, it was 11 degrees (F) outside, and it runs perfectly. I drove it to the shop and told them to hold onto the parts. I will drive it for a few more days to see what happens. It's supposed to be close to 50 degrees tomorrow, we'll see what happens. I checked it out with the OBD scanner, and everything seems to be fine. It went closed-loop and the fuel trims started working like they are supposed to. No noticeable hiccups so far. I'm not sure what was going on, possibly bad gas?