Throwing a bunch of codes not really sure what to do now hope you can help. on 2002 Dodge Ram 2500

Codes are:
p0606,p0123,p0118,p0113,p0121, & p0236 Need to know what can be fixed that wont break the bank any ideas are welcome thank you for all your time.

Asked by for the 2002 Dodge Ram 2500