P0430 Code: Catalyst System Efficiency Below Threshold (Bank 2) - In The Garage with CarParts.com
P0430 Code: Catalyst System Efficiency Below Threshold (Bank …
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How to Diagnose and Fix the Source of a P0430 Code
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2014 Chevy Silverado: PO430 code still triggering your check engine light?? Even after replacing the O2 sensors, and the catalytic converters? We found the solution! We started small. Replaced the O2 sensors, cleared code and drove it…..light came back on. 🤦‍♂️ Then replaced both cats with aftermarket, cleared code and drove it…..light came back on. 🤦‍♂️ Found a TSB showing a cracked or loose air box could trigger the same PO430 code. So we replaced the airbox. Cleared the code and drove it……l
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PO420/PO430? Don’t just replace your cat — VERIFY the fix! Too many techs skip the most important step: confirming the catalytic converter actually solved the issue. 🛠 In this clip, Oscar Gomez shows how to use live data, fuel trim, and Mode 6 to validate the repair. 🎥 Watch the full walkthrough on YouTube → https://www.youtube.com/watch?v=bulzVWNNuyc Master the process. Save the comeback. #PO420Fix #AutomotiveDiagnostics #ScanToolTraining #CatalyticConverter #MasterAutomotiveTraining
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