First Check Engine Light

[Chuck]

Hey guys, I have been reading all your posts daily, and I am slowly getting educated because of your fantastic stuff in the forum, my beast is Vin # 905104 Daytona Grey, Silver, Black Exhaust Tips, Nav, Carbon and still completely stock, 42,000 rolled. Had some Codes today 17863 Exhaust Gas Temp Sensor 1 (G235) Implausible Signal P1455 N - or A Plausible Signal Intermittent. - 17585. Bank 2 O2 Sensor Correction behind Catalyst Control Limit R - P1177 Upper Limit Reached.
I had it reset and so far check engine still off! Any ideas if I get this again?
Thanks

[ben916]

Added you to the list

perhaps an O2 sensor is bad or the connection came loose in the engine compartment.
IIRC, front O2 sensors are a bitch to get to...

[lswing]

First???....good lord man, think I'm on 15th....

Anyhow, since stock, might just be sensors or wiring as mentioned. I'm a bit tuned and O2's have been getting pissy, might have toasted them with too much heat. You could be running lean for some reason?

Update location please...

[4everRS]

I would let it go for now. If they come back up, you've got problems.

Front O2's and EGT sensors replacement requires lowering the rear of the motor a few inches to get access. Can be done with a transverse bar.

I highly doubt your running lean if stock. Stock tuning is notoriously rich.

Welcome to the board.

[Chuck]

Thanks, have been using BND ACES fuel formula, Talked to Brian numerous times, seems like a fantastic product and engine runs better, so hope the byproduct of combustion with this stuff is not doing something? Also, does anybody notice a somewhat increase in engine performance below the 1/4 tank level, and it is not simply less weight, it seem real?