Catalyst Monitor Repair Verification Drive Cycle

Ambient air temperature or IAT PID must read a minimum of 32°F (0°C) to initiate catalyst monitor. Perform VEHICLE PREPARATION  . Drive vehicle in stop and go traffic for 20 minutes. Include 6 different constant speeds between 25-45 MPH. Drive on expressway or freeway for an additional 5 minutes. Repeat QUICK TEST  .