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DTC P1622: EEPROM Error: Troubleshooting

  1. Clear DTC(s) referring to DIAGNOSTIC TROUBLE CODE (DTC) CLEARANCE .
  2. Turn the ignition switch to OFF position.
  3. Check if DTC P1622 is still detected referring to DIAGNOSTIC TROUBLE CODE (DTC) CHECK . If still detected, go to the next step. If not, the troubleshooting is completed.
  4. Replace ECM with new one referring to ENGINE CONTROL MODULE (ECM) REMOVAL AND INSTALLATION .
  5. Perform PROCEDURE AFTER ECM REPLACEMENT .
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