Carry Out The Key On Engine Off (KOEO) On-Demand Self-Test: Purpose

WARNING: This page is about a different car, the 2008 Ford Pickup, 2008 Ford F550 Super Duty, 2008 Ford F450 Super Duty, and 2008 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

The purpose of this test is to determine if the powertrain control module (PCM) has detected concerns that would cause a performance concern.

Carry Out The KOEO On-Demand Self-Test

Use the scan tool. Diagnostic trouble code (DTCs) set during this test are current faults.

Diagnostic Trouble Codes