Clear The Continuous Diagnostic Trouble Codes (DTCs) And Reset The Emission Monitors Information in The Powertrain Control Module (PCM)

Description

All OBDII scan tools support the Powertrain Control Module (PCM) reset.

The PCM Reset allows the scan tool to command the PCM to clear all emission-related diagnostic information. When resetting the PCM, a Diagnostic Trouble Code (DTC) P1000 will be stored in the PCM until all the OBD II system monitors or components have been tested to satisfy a drive cycle, without any other faults occurring. For more information about a drive cycle, refer to Drive Cycles. See: Drive Cycles

The following events occur when a PCM reset is performed:

• Clears the number of Diagnostic Trouble Codes (DTCs).
• Clears the DTCs.
• Clears the freeze frame data.
• Clears diagnostic monitoring test results.
• Resets status of the OBD II system monitors.
• Sets DTC P1000.