P0420
P0420 — Catalyst System Efficiency Below Threshold B1
12
Driver reports
12
Solved cases
6
Verified fixes
0
Wrong repairs reported
Most Verified Fixes for P0420
Ranked by confidence score — same vehicle matches weighted higher.
Driver Reports — P0420 12 reports
🟢 SOLVED 80% P0420 Catalyst System Efficiency Below Threshold Bank 1
👁 2,920
🟢 SOLVED 80% Ford Escape 2018 Catalytic converter P0420 code
Ford
2018
👁 2,818
🟢 SOLVED 80% Porsche Cayenne 2022 Catalytic converter P0420 code
Porsche
Cayenne
2022
👁 2,815
🟢 SOLVED 80% Dodge Ram 1500 2021 Catalytic converter P0420 code
2021
👁 2,804
🟢 SOLVED 80% Honda CR-V 2013 Catalytic converter P0420 code
Honda
2013
👁 2,793
🟢 SOLVED 80% Chevrolet Colorado 2021 Catalytic converter P0420 code
2021
👁 2,784
🟢 SOLVED 80% Land Rover Freelander 2018 Catalytic converter P0420 code
Land Rover
Freelander
2018
👁 2,768
🟢 SOLVED 80% Ford Mustang 2018 Catalytic converter P0420 code
Ford
Mustang
2018
👁 2,764
🟢 SOLVED 80% Nissan Leaf 2020 Catalytic converter P0420 code
Nissan
Leaf
2020
👁 2,760
🟢 SOLVED 80% Volvo S60 2021 Catalytic converter P0420 code
Volvo
2021
👁 2,757
🟢 SOLVED 80% Chevrolet Equinox 2019 Catalytic converter P0420 code
2019
👁 2,756
🟢 SOLVED 80% Mercedes-Benz CLA 2017 Catalytic converter P0420 code
Mercedes-Benz
2017
👁 2,745
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