Honda Accord 1998-2002 ECM Reset Tutorial and Guide
How to Reset the ECM/PCM
You can reset the ECM/PCM in either of two ways:
– Use the OBD II scan tool or Honda PGM Tester to clear the ECM/PCM memory.
See the OBD II scan tool or Honda PGM Tester user’s manuals for specific
– Turn the ignition switch OFF, and remove the No.13 CLOCK BACKUP fuse (7.5 A)
(A) from the passenger’s under-dash fuse/relay box (B) for 10 seconds.
NOTE: If the No.13 CLOCK BACK UP (7.5 A) fuse is removed and engine is
started, the MIL will come on and the PCM will store DTC P0560 (F23A4
How to End a Troubleshooting Session (required after any troubleshooting)
1. Reset the ECM/PCM as described above.
2. Turn the ignition switch OFF.
3. Disconnect the OBD II scan tool or Honda PGM Tester from the DLC.
NOTE: The ECM/PCM is part of the immobilizer system. If you replace the
ECM/PCM, it will have a different immobilizer code. In order for the engine
to start, you must rewrite the immobilizer code with the Honda PGM Tester.