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Clearing Diagnostic Trouble Codes

WARNING: This page is about a different car, the 2002 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: If using Toyota hand-held tester, DTCs may be cleared from ECM by switching from CHECK mode to NORMAL mode, or from NORMAL mode to CHECK mode, or if ignition switch is turned from ON to ACC or OFF position during CHECK mode.
  1. After repairs for Diagnostic Trouble Codes (DTC) have been completed, DTCs should be cleared from Engine Control Module (ECM) memory. Using scan tool or Toyota hand-held tester, follow the manufacturer's instructions and clear DTCs from ECM.
  2. DTCs may also be cleared by removing EFI No. 1 fuse (15-amp). EFI No. 1 fuse is located in engine compartment junction block at left side of engine compartment, in front of shock tower. DTCs may also be cleared by disconnecting negative battery cable. However, other various memory functions such as the clock, radio, etc. may be cleared and must be reset.
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