Check Engine code flashes 9 times...

twanktwank

twanktwank

Registered Member
Joined
18 June 2008
Messages
50
Location
Myrtle Beach, SC
I am trying to solve a problem with a car. I have done a little research here on the forum and have been able to use a jumper wire to detect how many times the check engine light flashes. It blinks a total of 9 times. After searching the archives, I think I am correct to say that it is the Cam Positioning Sensor crapping out. Has anyone else had this problem? If so, what are the symptoms to expect? Could it be something a little more simple that is just triggering the CPS? (Maybe like a o2 sensor going out?) Your input is greatly appreciated especially the "symptoms I should expect to experience". Thanks in advance!
 
Yep. Nine is the magic number. One thing that I noticed is when pressing in the clutch to change to the next gear, it seems to stay at the same RPM for about a half second before dropping down. Is this a symptom? It just does not seem right to me. All of my other cars, when pressing in the clutch, drop the RPM's immediately. I HATE not having experience with these cars!
 
Can't help with the crank sensor but the throttle hang seems to be pretty common, supposedly to help emissions (?).
 
The car is an '02 with 14,000 miles. I am keeping an open mind with this seeing the car has such low mileage. Things naturally go wrong if the car is not driven/ maintained regularly:smile:
 
I am thinking this is not covered under the emissions warranty, but rather under the regular warranty:). Not sure if you have officially hit the three year mark from purchase.

Certainly worth a conversation with your dealer though.

This is not a very common failure, but does happen. First thing to do is reset the ECU by pulling the clock fuse (only 7.5 amp fuse in the front passenger wheel well fuse box). See if it is a hard failure. It may have just been having a bad day:):).

The idle hang is totally normal for US 1997+ model year.

HTH,
LarryB
 
I will certainly check all of this next weekend. Thank you for the responses and hopefully this is like you said, "a bad day". None the less, if it does reoccur I will have a pleasant conversation with the dealer:wink:
 
twanktwank said:
I will certainly check all of this next weekend. Thank you for the responses and hopefully this is like you said, "a bad day". None the less, if it does reoccur I will have a pleasant conversation with the dealer:wink:
Click to expand...

Just an FYI, this is not a trivial repair. The labor is equivalent to a timing belt change + about 1 hour. How does the car run? Does it seem fine, sans the CEL??

Regards,
LarryB
 
Yes the car has not changed as for performance. I do not see it being a big deal for repair if it comes down to it. I will just change the timing belt and water pump all at the same time. My biggest fear was the throttle seeming to stay engaged for a short second before it dropped when changing gears. This supposedly is a common occurence though. Like I said, I will pull the fuse this weekend and if the check engine light does come on again with the same failure, I will fix it.
 
I took the car to a friend that has a Launch computer. The check engine light was stuck on due to a loose gas cap. Call me the idiot! Oh well... screwed it on tight and all is well. Just think; I was about to get detailed in repairs with changing the timing belt and things:eek:
 
twanktwank said:
I took the car to a friend that has a Launch computer. The check engine light was stuck on due to a loose gas cap. Call me the idiot! Oh well... screwed it on tight and all is well. Just think; I was about to get detailed in repairs with changing the timing belt and things:eek:
Click to expand...

mmm....

If you go here:

http://www.nsxprime.com/FAQ/DIY/trouble_codes.htm

You will see that the code for your actual problem was a "90" for OBDI. It translates to a code: P1456 Evaporative Emission Control System Leak Detected (Fuel Tank System) for OBDII cars.

I am puzzled as to how the ECU flashes a "0" :).

Anyway, glad it is resolved.

Regards,
LarryB
 
Last edited:
I'm confused:confused: Can you really read an OBD-II car by jumping the service connector? If so, it's the only car I've ever come across that will do that and have no clue how it could possibly have enough flashes, blinks and blanks to represent the hundreds of different code possibilities. I thought on any OBD-II, you had to have a scanner. I can understand jumping the connector to take the ECU out of the equation for certain diagnostics but just don't see the car giving up OBD codes that way. Is the Acura really something unique in this area?
 
tom4416 said:
I'm confused:confused: Can you really read an OBD-II car by jumping the service connector? If so, it's the only car I've ever come across that will do that and have no clue how it could possibly have enough flashes, blinks and blanks to represent the hundreds of different code possibilities. I thought on any OBD-II, you had to have a scanner. I can understand jumping the connector to take the ECU out of the equation for certain diagnostics but just don't see the car giving up OBD codes that way. Is the Acura really something unique in this area?
Click to expand...

The NSX has always retained it's OBDI interface and the CEL can be used to indicate issues. It does not have the full code set of OBDII, only what was originally offered for OBDI:).

So yes, you do need a scanner to get the full OBDII code set from the ECU, however you can still see the OBDI CEL flash codes.

Regards,
LarryB
 

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