P2251 and P2195 O2

[altjx]

So I've been having the same exact mods for about two years now, and have been running the same tune for the last year. Some of you may already know that I've been battling nonstop alternator failures over the last few months. Fifth one is going on this week, along with a brand new PCM, battery, battery harness, and alternator wiring harness.

On my way home yesterday I noticed that the car felt a little weird, and today I felt the same weird reactions with the car. A little rough idle, lots of popping during acceleration, and then I get a CEL.

Other than the first two CELs that pertain to the alternator, these two are different. These show the following codes:

• P2251 - O2 Sensor Negative Current Control Circuit/Open
• P2195 - O2 Signal Biased/Stuck Lean

I don't have cats and haven't had them in over a year, so I'm not quite sure what could be going on here.

Any help would be greatly appreciated.

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[altjx]

Nvm, just got word from another mechanic that it's the front O2 sensors, so this makes sense.