Additional Information

Use a scan tool to clear DTCs from the powertrain control module (PCM) memory. Do not disconnect the vehicle battery to clear the PCM memory. Do not disconnect the PCM connectors solely for clearing DTCs. This will not clear the DTCs, unnecessarily disturbs the connections, and may introduce a new problem. Before clearing any DTCs the scan tool has the capability to save any data stored with the DTCs in order to display that data at a later time. Capture the DTC info before beginning diagnosis. Do not clear any DTCs until you are instructed to do so within a diagnostic procedure.

Many PCM DTCs have complex test and failure conditions. Therefore, simply clearing DTCs and watching to see if the DTC sets again may not indicate whether a problem has been corrected. To verify a repair after the repair is complete, you must look up the test conditions and duplicate those conditions. If the DTC runs and passes the problem is fixed.