In a Honda CR-V, the ECU (Engine Control Unit) fuse is typically a 10 Amp fuse, which is usually blue in color. However, fuse specifications can vary by model year, so it's important to consult the owner’s manual or fuse box diagram specific to your vehicle for accurate information.
Disconnect the battery for 60 seconds, if that does not work remove the ECU fuse and the backup fuse for a minute.
In a 1999 Honda Prelude, the ECU (Engine Control Unit) fuse is located in the under-hood fuse box. You can find this fuse box near the driver's side of the engine compartment, close to the windshield. The specific fuse for the ECU is usually labeled as "ECU" or "PCM" (Powertrain Control Module) in the fuse diagram found on the lid of the fuse box. Always refer to the owner's manual for precise information on the fuse layout and specifications.
The check engine light on a 2004 Honda Civic can be reset by unplugging the ECU fuse in the engine bay fuse box. The ECU fuse is located is blue and rated at 15 amps.
A 2000 Honda Accord check engine light will stay on if the ECU is not reset. To reset the light remove the ECU fuse from the engine bay fuse box. Reinsert it after 5 seconds.
To reset the check engine light on a 1994 Honda Civic locate the fuse box in the engine compartment. Find the ECU fuse and pull it off for at least 5 seconds. This will erase all codes on the ECU.
you can go into the fuse panel under hood around pass. side remove ecu fuse to reset when needed
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You do not need to remove a fuse at all. To reset the ECU on Honda Accords, just disconnect the negative battery cable (or whatever cable is ground) and wait for 15 minutes, then reconnect.
Disconnecting the positive battery terminal, waiting a few minutes and then connecting it back up works just as well to reset the ECU.
The O2 sensor isn't fused. It plugs straight into your ECU.