Does anyone know why the OBDII port might stop working? My CEL comes on every once in a while, and I know what the problem is, but I always like to check and clear the code to make sure its not something new. Today when I plugged in my code reader nothing happened. Normally the reader pulls power from the port but it just stayed off.

Is the OBDII port fused? Or is there something else I should check?

 

Most likely a bad fuse... I believe it's the same one your cig lighter is one.... try it out and get searching.... I'm willing to bet you find a dud.

 

It is the same fuse as the cigarette lighter if I remember.....

 

Thanks! I'm glad to find it IS on a fuse.. Thats easier than pulling cords. I'm ok with pulling every fuse if it means thats the problem Any idea which number it is? I dont have a manual to look in.

 

On your '02 it should be fuse 12.

Also here is a link to the owners manual.
http://www.motorcraftservice.com/pub.../02f23og5e.pdf

 

I do not have permission to view that page...

Thanks I will check number 12! If anyone else can find me a pdf of the right manual (diesel supplement would be appreciated too) then I will be very thankful.

 

I know this is a silly question...but you are turning on the key when trying to connect AE, right?

 

Yes, and my particular code reader seems to like it when the engine is on, so I do and always have done it with the motor running.

 

I had to ask.
I has happened here before and it took us all a while to figure it out. Eventually someone asked the question and the OP had a good laugh because his key was in the off position.

 

Oh I'll believe it I'm sure that will be me on some other question some day.

 

Go to Official Ford, Lincoln & Mercury Owner Site | Personalized Owner Information | FLMowner.com then register. Input your VIN number and you will ave full access to all the owners manuals and supplements. It is a pretty handy site that if you want can track maintenance for you too.

 

'Twas the fuse.. Havnt replaced it cause I dont have an spare 25A fuses but I pulled it and it was popped.

 

Should only be a 20A fuse in there.

 

Had a 25 in there. I'll put a 20 in and see what happens

 

Check your manual first... find the position in the manual, get the # for the fuse, and then check the number for the correct fuse, it has them all listed. REALLY NEED the correct fuse in there!