FixVault
Home › Acura › 2020 › RDX Base › Repair and Diagnosis › Engine Performance › System › Engine Control System - DTC Diagnostics (P0300 - P1658) › DTC Troubleshooting › DTC P0420 › Notes

DTC P0420: Notes

DTC P0420  : Catalyst System Efficiency Below Threshold

How To Use This Service Information .

NOTE:
  • Before you troubleshoot, review the How to Troubleshoot .
  • Poor quality fuel may cause this DTC.
About FixVault