| 09-11-2018, 06:51 AM | #1 |
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Private First Class
 57
Rep 148
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CEL p0420 & p0430 - BM3 Stage 2 AGG
I have my m4 tuned by protuningfreaks bootmod3. I have VRSF Downpipes, Stock midpipe with gutted secondary cats and a M Performance Exhaust. I ran this tune for 2 months with no issues and now the CEL comes on and I keep getting p0420 and p0430 codes. I reset it and it comes back within like 50 miles. I also tried to do an online recode in the actual software and that erased the CEL but it keeps coming back. Is it my o2 sensor? I have it set to level 7 so the burble is super loud... or is it something else? Secondary cats gutted?
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| 09-11-2018, 08:00 AM | #2 |
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Brigadier General
 
4944
Rep 4,976
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Did you try searching the codes on the forum.
I came up with: Drivetrain and Stability Malfunction https://f80.bimmerpost.com/forums/sh....php?t=1156541 P0420= BMW Catalytic Converter Conversion (Bank 1) P0430= BMW Catalytic Converter Conversion (Bank 2) Also, have you reached out to BM3, their service is spot on.
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Wife's Car: 2020 X4M Competition, Alpine White on Black Alcantara and Biege
Current Car: 2018 F80 M3CS, SMB, DCT, ZEC, MPE Recently Departed: 2020 F87 M2C, LBB, ZEC, 6MT (Euro Delivery Aug. 29, 2019, totaled by an idiot in a Camry who then ran from the scene) Wife's Prior Car: 2018 F80 M3, Yas Marina Blue, DCT, Black 19s, Carbon Structure Anthracite Cloth/Leather Combination, Driving Assistance Package (Euro Delivery Oct. 9, 2017) |
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