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Trouble codes on a 97 Honda Prelude P0450 and P0453

Tiny
RAYCLOWN
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What can I expect to repair with these codes. I think there related too fuel. Any help would be great thanks
Saturday, March 3rd, 2007 AT 1:56 PM

12 Replies

Tiny
CHEVY22
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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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Saturday, March 3rd, 2007 AT 3:42 PM
Tiny
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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
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Saturday, March 3rd, 2007 AT 3:56 PM
Tiny
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The ftp is located on the right side of the firewall, there will be alot of emission solenoids there, (california car )
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Saturday, March 3rd, 2007 AT 4:10 PM
Tiny
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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
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Saturday, March 3rd, 2007 AT 4:21 PM
Tiny
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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
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Saturday, March 3rd, 2007 AT 4:29 PM
Tiny
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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.
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Saturday, March 3rd, 2007 AT 4:54 PM
Tiny
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Wow thats weird 98 shows ftp on all models, hmmm

jim
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Saturday, March 3rd, 2007 AT 4:59 PM
Tiny
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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.
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Saturday, March 3rd, 2007 AT 5:26 PM
Tiny
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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
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Saturday, March 3rd, 2007 AT 5:38 PM
Tiny
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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
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Saturday, March 3rd, 2007 AT 5:57 PM
Tiny
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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.
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Saturday, March 3rd, 2007 AT 6:42 PM
Tiny
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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
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Saturday, March 3rd, 2007 AT 10:03 PM

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