Self Test With Malfunction Indicator Lamp

During Self-Test, a Diagnostic Trouble Code (DTC) is reported by the Malfunction Indicator Lamp (MIL). It will flash the "CHECK ENGINE" or "SERVICE ENGINE SOON" light on the dash panel.

A single-digit number of three will be reported by three flashes. However, a DTC is represented by a three-digit number, such as 3-1-2. As a result, the Self-Test DTC of 3-1-2 will appear on the MIL as three flashes, then, after a two-second pause, the MIL will flash one time and after another two-second pause, the MIL will flash two times.

The Continuous Memory DTCs are separated from the Key ON Engine OFF DTCs by a six-second delay, a single half-second flash, and another six-second delay.