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