DTC P0420: Catalyst System Low Efficiency - Bank 1 & DTC P0430: Catalyst System Low Efficiency - Bank 2: Notes

NOTE: To locate components, see COMPONENT LOCATIONS . For circuit reference, see WIRING DIAGRAMS . For connector terminal identification, see CONNECTOR IDENTIFICATION . If testing requires component removal or replacement, see appropriate REMOVAL & INSTALLATION article.

NOTE: Bank 1 refers to right cylinder bank. Bank 2 refers to left cylinder bank.