P0420

DTC P0420 CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD (BANK 1)

DTC DETECTING CONDITION:
- Two consecutive driving cycles with fault
- GENERAL DESCRIPTION P0420

TROUBLE SYMPTOM:
- Engine stalls.
- Idle mixture is out of specifications.

CAUTION: After repair or replacement of faulty parts, perform Clear Memory Mode Clear Memory Mode and Inspection Mode. Preparation For the Inspection Mode

WIRING DIAGRAM:

Wiring Diagram:

Step 1-2:

Step 3-5:

Step 6-8: