DTC P0420 Catalyst System Efficiency Below Threshold (Bank 1): DTC Detecting Condition
WARNING: This page is about a different car, the 2013 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.
- Detected when two consecutive driving cycles with fault occur.
- GENERAL DESCRIPTION < Refer to DTC P0420 CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD (BANK 1) , Diagnostic Trouble Code (DTC) Detecting Criteria. >