Instruction Manual

Diagnostic Menu
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Several screen examples are shown on the following page.
DTC Type Description
History Intermittent codes placed in the vehicle’s memory when the trouble orig-
inally occurred, and will remain there even if the trouble has been cor-
rected. If no trouble after 50 engine warm-up cycles, the DTC will be
erased.
Current Codes transmitted through the PCMs data stream when a trouble condi-
tion is active and cannot be erased. The problem must be repaired to
remove the DTC.
Intermittent Indicates the current code has been set at least once but possibly not
enough to cause a history code to be stored.
MIL Indicates that this DTC has turned on the MIL light.
Pending Pending codes are also referred to as continuous monitor or maturing
codes. An intermittent fault causes the control module to store a code in
memory. If the fault does not occur within a certain number of warm-up
cycles (depending on vehicle), the code clears from memory. If fault
occurs a specific number of times, the code matures into a DTC and the
MIL illuminates or blinks. This function can be used with KOEO or
KOER.
Non-MIL DTC that is not emission-related and did not turn on the MIL light.