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DTC P1622: EEPROM Error: Troubleshooting

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