Service Engine light on after install aftermarket stereo

[vegeta2k]

I installed Kenwood DNX571HD and a backup camera on my 2009 Nissan Rogue. After the installation, the service engine soon light came on. I unplugged the negative terminal from the battery before i started. The only thing i disconnected was the hazard connection. The harness connection was straight forward but I'm not sure if I connected the antenna correct. I connected the blue wire from the harness to blue wire from the Kenwood wires. I plugged the blue wire from the antenna adaptor to the blue/white wire from kenwood. Please help. Thanks

[JB'sTitanXD]

stop at the auto part store and have them pull the codes, and post them on here. if its nothing they can clear them too

[vegeta2k]

Code P0603. I just cleared it and see if it will come again. Google search result that the battery was disconnected for a long period of time. hopefully it's because of that.