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08-24-2023, 12:23 PM
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#1 |
 Drives: Camaro ZL1 Join Date: May 2020
Location: Tampa
Posts: 166
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Had some Codes Pop Up recently
P2096 and P2098
Post Catalyst Fuel Trim System Too Lean Bank 1 and Bank 2. I've had the header done about 1.5 years ago, if not longer. Was running fine and no check engine light since 2 weeks ago. First I thought it was a bad batch of fuel. So I already refueled 3 times and cleared codes. Codes pop back up within 30 minutes of driving or hitting the throttle hard. PS the car does not have any cats. Could it be the sensors, any advice would be appreciated, thanks |
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08-24-2023, 04:25 PM
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#2 |
   
Drives: 2023 ZL1 - All Bolt On's Join Date: Dec 2022
Location: Columbus, Ohio
Posts: 1,188
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Have you tested and looked for intake/air leaks post Mass Airflow sensor? I had those codes and it was driving me and my tuner crazy. Came to find out I have a PCV hoses was lose and was allowing air in after the MAF sensor. Once I fixed that The codes cleared after a few different driving sessions.
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2023 ZL1 A10-Stainless Works 2" Long Tubes & Legend NPP Axle Back•GESI UHO 4.5" CATs•RF BigGulp•Kong 103mm & X-Ported Blower•Griptech 2.30" Upper•ATI Super Damper w/9.45" Lower•THPSI Port Injection w/875cc Injectors•FI Interchillers Stage 2•Brisk RR14S Plugs•Granatelli Malevolent Coils•Katech Low Profile Billet Valve Covers•Katech Duel Fuel Pump•MM Wild 1000HP•DSX Flex Fuel Kit•DSX Billet Lid•DMS 2gal Fender Tank•BMR Cradle Lockout•Weld Solana 18x8 Fronts/17x10 Beadlocks MT ET ST R's•Unlocked TCM•E85=785rwhp/691rwtq +21psi | 1/4=10.5005 @134.21 60ft=1.6182, 1/8=6.8373 @106.11
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08-24-2023, 04:52 PM
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#3 | |
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Drives: Camaro ZL1 Join Date: May 2020
Location: Tampa
Posts: 166
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Quote:
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08-24-2023, 05:09 PM
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#4 |
  
Drives: 2020 Chevy Camaro ZL1 Join Date: Apr 2023
Location: Calgary Canada
Posts: 1,652
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Just change the downstream sensors, with no cats it’s expected and it will be cheaper than getting it diagnosed to discover the inevitable
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08-24-2023, 05:19 PM
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#5 | |
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Drives: Camaro ZL1 Join Date: May 2020
Location: Tampa
Posts: 166
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Quote:
Thanks in advance |
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08-24-2023, 05:30 PM
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#6 |
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Drives: 2020 Chevy Camaro ZL1 Join Date: Apr 2023
Location: Calgary Canada
Posts: 1,652
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Yes, that is the right part number for both factory upper and lower
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08-28-2023, 11:38 AM
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#7 | |
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Drives: Camaro ZL1 Join Date: May 2020
Location: Tampa
Posts: 166
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Quote:
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08-28-2023, 11:58 AM
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#8 | |
    Drives: 2017 2SS, 50th pkg, M6, MRC, NPP Join Date: Jan 2016
Location: Ocean City, NJ
Posts: 3,555
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Quote:
If it worked before you can try replacing the sensors. I would probably try one of the cheater harnesses that can be plugged in place of the O2 sensor and always give an in-range reading. |
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08-28-2023, 03:05 PM
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#9 |
Drives: 2018 HBM ZLE Join Date: Aug 2017
Location: In the garage
Posts: 877
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With no cats, shouldn't these codes be turned off? Downstream o2's monitor the cats, which you don't have. As long as the upstream o2 readings are good, would think downstream's should be disabled.
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08-29-2023, 09:17 AM
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#10 |
  
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 7,560
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Log your fuel trim data. If long terms are excessively positive(+25% or higher at idle) then you have a vacuum leak or unmetered air getting in the system.
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 2016 NFG SS A8/Whipple 2.9/Fuel System/Flex Fuel |
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08-29-2023, 11:19 AM
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#11 | |
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Drives: 2017 2SS, 50th pkg, M6, MRC, NPP Join Date: Jan 2016
Location: Ocean City, NJ
Posts: 3,555
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Quote:
I did get the impression OP has deleted both primary and secondary converters. |
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09-21-2023, 03:05 PM
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#12 |
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Drives: Camaro ZL1 Join Date: May 2020
Location: Tampa
Posts: 166
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Update
Swapped out the O2 Sensors, cleared code. All good 2 days and counting.
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