September 30: LEMON manuals is back up on a temporary server! Slowness is possible
DTC P0420 Catalyst System Efficiency Below Threshold (Bank 1): Trouble Symptom
- Engine stalls.
- Idle mixture is out of specifications.
CAUTION:
After servicing or replacing faulty parts, perform Clear Memory Mode Refer to
OPERATION , Clear Memory Mode, and Inspection Mode Refer to
PROCEDURE , Inspection Mode.