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i have a 94 prelude CD player in my 99 civic all you have to do is call Honda and get the security code for the CD player
Code 700 means: A/T Concerns
Honda Prelude S Engine code: F22A1 Compression ratio: 8.8:1 Horsepower: 133 PS
seek to find code 504 and it will lead you that will help give you further instructions about code505!!.
You have to go to a Honda dealer and they will give you the code.
Trouble code P0401 means: Exhaust Gas Recirculation Flow Insufficient Detected
Trouble code P1456 means: EVAP Emission Control System Leak Detected (Fuel Tank System)
Code P1491 Means: EGR Valve Lift Insufficient Detected EGR Valve needs to be replaced
You need to contact a Honda dealer who will sort this out for you.
Could be an EGR port clogged with carbon. Remove and clean EGR and EGR ports.
take out the cup holder in the center console next to the parking brake. it should be right under there.
look in the glove box or the trunk you may find the code.