DTC P0420 Catalyst System Efficiency Below Threshold (Bank 1): Trouble Symptom
WARNING: This page is about a different variant/trim than selected.
- Engine stalls.
- Idle mixture is out of specifications.
CAUTION:
After servicing or replacing faulty parts, perform Clear Memory Mode <Ref. to
OPERATION , Clear Memory Mode.>, and Inspection Mode <Ref. to
PROCEDURE , Inspection Mode.>.