Hello all, i'm new to the site a friend recommended it to me. My CEL has came on a few times this past month so today using the list posted on this site I diagnosed the problem and came up with a code 9 "cyp sensor". Just wanted to make sure that I was using the right list because the list shows 85-98 prelude, and if anyone had any advice on what I should do repair wise to fix this issue. Thanks everyone.

 

CYP sensor is located in the Distrib housing. The housing or the entire dizzy needs to be replaced.

 

I had a question about that as well, looking in the helm manual it says if you reset the ECM and the light dosnt come back on, it might be ok? or should I just go ahead and buy a new distributor?

 

Always reset first. There are many times that it's just a temporary thing.

If it comes back, check the wiring around the dizzy first for fraying or places where metal might be showing. If all else fails, replace the dizzy

 

cool thanks for the responses guys

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 98TypeSH &raquo;</TD></TR><TR><TD CLASS="quote">CYP sensor is located in the Distrib housing. The housing or the entire dizzy needs to be replaced. </TD></TR></TABLE>

Sorry not to jack the thread but I have a same problem with my '99 Prelude. I just want to confirm that the CYP sensor is inside the distributor, not near the crank pulley?

 

you are thinking of the crankshaft fluxuation sensor. code 9 is for the Cylinder position sensor which is in the dizzy.

I had the same **** and replaced the housing, it was gone. I just so happened to have a friend with an extra housing.

 

i have the same code on my gsr so I replaced it with a new distributor and I still have the same code. It came back on right away after reseting the ecu. It's weird though becuase the car drives fine. I can take it all the way up to redline all day without any stubling or anything at all. I was thinking of just leaving it this way but I can't pass inspection with my check engine light on.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 98TypeSH &raquo;</TD></TR><TR><TD CLASS="quote">you are thinking of the crankshaft fluxuation sensor. code 9 is for the Cylinder position sensor which is in the dizzy.

I had the same **** and replaced the housing, it was gone. I just so happened to have a friend with an extra housing.</TD></TR></TABLE>

I had the exact same thing happen on a customers car. Replaced the dizzy and everything was good to go.

 

There seems to be a large influx of people and CEL 9. If for whatever reason the code does not go away with the swapping of the dizzy/housing then you could have an open short somewhere in the wire. Electrical gremlins are such a pain in the *** to track down...

Also when installing the new distributor, it would probably be wise to disconnect the negative on the battery first, then install, then plug the battery back in and be ready to disarm your alarm.

 

I agree that it is probably a short in the connection along its way to the ecu but shouldn't I feel a difference in my driveability... Is it ok to keep driving like this?? I really don't want to re-wire everything... Unless there is an easier way to track it down that I don't know about.

 

Did you ever find a fix for this?