Powertrain Control Module Reset: Description

Powertrain Control Module (PCM) reset allows the scan tool to command the PCM to clear all emission-related diagnostic information. When resetting the PCM, DTC P1000 will be stored in PCM until all the OBD II system monitors or components have been tested to satisfy a drive cycle, without any other faults occurring. See DRIVE CYCLES in appropriate SELF-DIAGNOSTICS article. Clearing codes from the vehicle-specific RETRIEVE/CLEAR CONTINUOUS DTCs will clear all systems, including the OBD II systems. Clearing codes from the OBD II generic menu will only clear OBD II features for the 7.3L diesel.

The following events occur when a PCM reset is performed:

• Clears the number of Diagnostic Trouble Codes (DTC).
• Clears DTCs.
• Clears the freeze frame data.
• Resets status of the OBD II system monitors.
• Sets DTC P1000 as a vehicle-specific DTC. P1000 will not appear as an OBD II code.