code p2099 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

oldman14ss · 10-29-2022, 09:07 PM

code p2099, i know what it is. its post catalitic full trim system too rich bank 2.thats the o2 sensors behind the cat on the passenger side. why am i throwing that code if my tuner tuned the rear o2's out? i did unplug the sensor doing the anti venom mod. never threw that code till after that mod. i also ram jammed it hard with a wide open 1st to 2nd shift and noticed the code. deleted it with my actron code reader but, it came back the other day when i got on it in the cool air. i have american racing headers with their high flow cats. if it would be not fully seated in the connector even though its tuned out would it throw a code? bad o2 sensor even tuned out throw the code. do i need to go to a shop with a better code reader? any of you tuners experienced with this stuff help the oldman out.

Joe.G · 10-29-2022, 10:14 PM

So I may wrong here, but when I added my Headers and Hi Flo cats, I believe my tuner turned the sensitivity down on my rear O2's but didn't completely shut them off so if they were not fully plugged in I could see that setting a code.

oldman14ss · 10-30-2022, 04:10 PM

i hear you Joe.G i'm leaning that way. get under it when i pull the shifter this winter. it only started doing this after the anti venom mod. ya know, i think i'll get under it this week supposed to be around 70* degrees this week, i'll unplug it and add a dab of silicone grease to the connector and see if that helps. its been about 3 years since tune and i dont recall if he turned the sensitivity down or turned them off. i think he might have told me that due to the electronics that you cant completely tune it out. i'll call him tomorow. thanks,

10-29-2022, 09:07 PM	#1
oldman14ss Drives: 2014 1ss camaro Join Date: Jul 2017 Location: missouri Posts: 706	code p2099 code p2099, i know what it is. its post catalitic full trim system too rich bank 2.thats the o2 sensors behind the cat on the passenger side. why am i throwing that code if my tuner tuned the rear o2's out? i did unplug the sensor doing the anti venom mod. never threw that code till after that mod. i also ram jammed it hard with a wide open 1st to 2nd shift and noticed the code. deleted it with my actron code reader but, it came back the other day when i got on it in the cool air. i have american racing headers with their high flow cats. if it would be not fully seated in the connector even though its tuned out would it throw a code? bad o2 sensor even tuned out throw the code. do i need to go to a shop with a better code reader? any of you tuners experienced with this stuff help the oldman out.

10-29-2022, 10:14 PM	#2
Joe.G Drives: 2014 2SS/RS 6SP Ashen Grey Join Date: Aug 2021 Location: NY Posts: 1,764	So I may wrong here, but when I added my Headers and Hi Flo cats, I believe my tuner turned the sensitivity down on my rear O2's but didn't completely shut them off so if they were not fully plugged in I could see that setting a code. __________________ GM 3.91/TrueTrac OEM ZL1 Rims, 6 Piston Brakes & Side Skirts.ACST4 Splitter/Deflectors NPP M2W,GM Short Throw,GPI Ported Rod Mod,BO White PTB,CAI/JRE Scoop, GC Aluminum DS,Stainless Works Ceramic LTH/HiFlo Cats, Hotckis 1" Springs & Chassis Max Brace BMR Adjustable Swaybars,Trailing Arms, Adjustable Toe Rod, LCA & Z28 UCA Bushings Hendrix Solid Cradle Bushings Pedders Radius Rod Inserts Strut tower brace, Moroso Catch Can,SCT X4 Dynosteve,Remote Clutch reservoir,Hero Smoked Tail and 3rd Brake Light, Diode Dynamic SL1 Fog Lights AeroForce Dual gauge/Autometer pillar mount.

10-30-2022, 04:10 PM	#3
oldman14ss Drives: 2014 1ss camaro Join Date: Jul 2017 Location: missouri Posts: 706	i hear you Joe.G i'm leaning that way. get under it when i pull the shifter this winter. it only started doing this after the anti venom mod. ya know, i think i'll get under it this week supposed to be around 70* degrees this week, i'll unplug it and add a dab of silicone grease to the connector and see if that helps. its been about 3 years since tune and i dont recall if he turned the sensitivity down or turned them off. i think he might have told me that due to the electronics that you cant completely tune it out. i'll call him tomorow. thanks,