check engine light?

can a bad connection on the speedo gear on the transfer case cause a check engine light to go on?
97' 4.0l 231j automatic
I replaced my transfer case chain and afterwards as I drove home, noticed I had no mph but after a bit the check engine light came on, just wanted a opinion before I take it to autozone to be scanned

Yes

Code 15 No Vehicle Speed Sensor Signal - No vehicle distance (speed) sensor signal detected​

during road load conditions. Check Engine Lamp will illuminate during engine operation if this Diagnostic Trouble Code was recorded.

alright awesome, I didn't know if the speedo was something the computer would take notice and label it as a engine problem. thank you:cheers:

Demonoid369 said:

alright awesome, I didn't know if the speedo was something the computer would take notice and label it as a engine problem. thank you:cheers:

Click to expand...

Yes because the ECM needs to know vehicle speed for fuel mapping.

Once you download the Check Engine Light trouble codes it should be very simple to determine what is wrong.

Alright, today I replaced the leaking seals on my transfer case and in the process I sprayed and cleaned the connector on the speedo and still no speed...... I noticed the check engine light is off but I still have no speed. Is this something I should replace? I can't think of anything else that could throw the light or stop the speedometer since that was the only thing I disconnected. If it does have to be replaced is there a part number that I can get to get the part? Greatly appreciate it.

since I can't edit posts here is updated info lol
http://jeep-xj.info/HowtoSpeedoGears.htm
anyone have closer more detailed pics? i'm starting to wonder if I placed the speedo in wrong, but I don't want to just start turning it around and accidentally chew up the gear from being to tight.

http://jeepin.com/features/speedogear

There's not much to it; just line up the correct range and tighten it up. What is the Pxxxx code?