The 2001–2005 Civic uses the same key setup, so everything on this page applies to those years too. The full picture is on the Honda Civic key guide.

2004 Honda Civic: key facts

Key type: Transponder chip key
Push-to-start: No
Transponder chip: Megamos 13
Programming: OBD
All keys lost: We can originate new keys on site

Cloneable HD106-PT5 (Megamos 13) blanks are cataloged for 2003-2004 Civic; European catalogs list Megamos Crypto 48 for the same years — confirmed by chip read if a key tests odd.

Same key system as the 2001–2005 Civic

Honda kept the Civic's key system unchanged across 2001–2005, so everything about replacing a 2004 key — blanks, programming, and what happens if every key is lost — matches the rest of that run. The full year-by-year breakdown lives in our Honda Civic key guide.

What drives the price is the key type, whether you still have a working key, and where the car is parked. There's more on Honda programming in general on our Honda key page.

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Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.

Last updated 2026-10-11.

2004 Honda Civic key replacement

2004 Honda Civic: key facts

Same key system as the 2001–2005 Civic

We cover all these cities