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Home › Acura › 2019 › RDX Technology, AWD › Repair and Diagnosis › Engine Performance › System › Engine Control System - DTC Diagnostics (P0300 - P1658) › DTC Troubleshooting › DTC P0420 › Overview

DTC P0420: Overview

If the secondary HO2S (sensor 2) fluctuation integration value within a certain duration exceeds a specified value, the PCM determines an abnormality and stores the DTC.