Clearing Diagnostic Trouble Codes
WARNING: This page is about a different car, the 2003 Lexus ES 300 and 2002 Lexus ES 300. However, it is still accessible from the selected car via links, so may be relevant.
- The following actions will erase the DTCs and freeze frame data.
- Operating the OBD II scan tool (complying with SAE J1978) or the hand-held tester to erase the codes. See the OBD II scan tool's instruction book for operating instructions.
- Disconnecting the battery terminals. However, when battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See appropriate COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery.
- Removing the EFI fuse, (located in left side engine room Junction Box), for 10 seconds or more with the ignition switch off.
- Removing the ECU-B fuse, (located in driver side Junction Box), for 10 seconds or more with the ignition switch off.
- Check that the normal code is displayed after clearing DTC(s).