Code Enable Criteria

The following must occur for DTC to run:

• Vehicle is traveling at a speed of 3 MPH or more.
• Throttle position is 5 percent or more.
• Engine speed is 2000 RPM or more.
• Vehicle is cruising and not accelerating.
• DTCs P0121, P0122, P0123, P0502 and P0503 are not stored.