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07-17-2023, 10:37 AM
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#1 |
 Drives: 2011 Camaro rs Join Date: Jun 2023
Location: NC
Posts: 65
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Question
My neighbor has a 2016 Camaro and he showed me on his OBD2 that all Catalytic Converters temperatures were within 5/10 degree's of each other and he's still getting a P0420...
I didn't know what to say' except take it to the dealership... What could be causing that P0420 to trip? |
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07-17-2023, 11:18 AM
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#2 |
       Drives: 2010 Camaro SS2,L99, LSA SC Join Date: Aug 2017
Location: Huntsville, AL
Posts: 2,155
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Not sure where Cat temps are coming from, does the Gen 6 have and actual temp sensor on the cat?
I don't know that cat temps mean anything anyway. The computer thinks the efficiency is off on one of the cats and that has a very long list of possible causes, including exhaust/vacuum leaks, o2 sensor issues and possibly a bad cat. |
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07-17-2023, 01:04 PM
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#3 |
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Drives: 2015 Z/22 Join Date: Aug 2015
Location: Ontario, Canada
Posts: 931
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Cat temps are calculated on the 5th gen and I imagine on the 6th as well.
I got P0420 after installing Mace cams and I think it was due to the engine running way rich (~20%) - after getting the fueling dialed in the code disappeared. https://www.obd-codes.com/p0420 Was any work done on the car recently?
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Overkill/Self Tuned; Mace Camshafts; K&N Typhoon Cold Air Intake; Ported 80mm Throttle Body/Intake Manifolds/Manifold Spacer; Solo Performance High-Flow Cats, Cat-back Exhaust; Vitesse Motorsports Throttle Controller; Elite Engineering E2 Catch Can; BC Racing BR Coilovers; JPSS Delrin Radius Rod Bushing Inserts, Sway Bars; Pegasus Aluminum Rear Cradle Bushings, Camber/Caster Plates; Z/28 Toe Links, Trailing Arms, Upper Control Arm Bushings, Rear Shock Mounts
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