trouble codes on a 97 honda prelude p0450 and p0453

the 453 is fuel tank pressure sensor high voltage , if the wiring is good and the sensor has high resistance it will need the sensor , the other code is no existent and i would like to help with pricing i cant find parts or labor for it sorry

thanks
jim
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yep i think your right the ftp sensor. were is the sensor at on my car. its a 97 honda prelude type sh. thanks for the help so far

the ftp is located on the right side of the firewall , there will be alot of emission solenoids there , (california car )

but the funny thing is i don't have a california car. does it say anywere for a 97 honda prelude type sh non california. thanks for the help so far

nope , i checked the diagram and it specifically states and has the part in its own box california car , any other does not have it
thanks jim

okay what about for a 98 honda prelude. i have a 97 i was just checking to see if the 98 to 01 have the ftp sensors. this would be non california also. thanks.

wow thats weird 98 shows ftp on all models , hmmm

jim

i know what the problem maybe. i no longer have a 97 honda prelude ecu. my dad got 1 from a salvage yard out of a 98 prelude. i think what the computer is doing is its telling me i don't have a ftp sensor. now from what i just said here. would i need to get a 97 prelude ecu or will that ftp sensor thing do something too my car if i don't have the sensor there to begin with. thanks.

yep thats probably it , im still wondering if there is one on your car ??? i bet there is a harness there for one , if there is a connector i would slap one on it if not

beware !!! you could fry pcm

locate the terminal on the pcm for th ftp and find the ohm value , then find a resistor or diode with the same vale and place it in the wires for the unit off the pcm , but again ive done this several times on weird engine swaps and have fried ecms and harnesses and sensors trying ,, i did have more success than failure but it was a long hard road

no theres not a plug in for it near the firewall were it should be if it was california. i guess im going to have to look into getting another ecu. but the fun part is that there around 8 hundred bucks a piece. i was hopeing that it might not cause any problems with my car other then too have the check engine light on all the time. what do you think. thanks

i really wouldnt think it would cause a drive ability issue , just a light on , but the problem is if there really is something wrong with the car you wont know ,

yeah true story. but thanks for all your research and help. but im going to look into getting a ecu for this car. i hope i can find 1 for like 100 bucks so i saw on ebay. i just got to find the right year and model. if you know were i can find one let me know. thanks again you have been a big help