Clearing Trouble Codes

The PCM Reset Mode permits NGS Tester to command the PCM to clear all DTCs. When resetting the PCM, DTC P1000 will be set in the PCM until all OBD II system or components have been monitored during OBD II Drive Cycle.

A PCM reset:
- Clears the DTCs.
- Clears the freeze frame data.
- Clears the oxygen sensor test data.
- Resets the status of the OBD II system monitors.
- Sets the DTC P1000.

PERFORMING PCM RESET
- Perform a visual inspection and vehicle preparation as required.
- Select VEHICLE AND ENGINE SELECTION menu.
- Select year, engine, or model with the appropriate qualifier if needed (i.e., transaxle, 49 state or California).
- Select GENERIC OBD II FUNCTIONS menu.
- Select CLEARING DIAGNOSTIC CODES.
- Follow operating instructions from NGS Tester menu screen.