Hi I got the check engine light on and used my OBDII code reader and got this:

P1509
P0113
P0118 and
P1298

Any ideas

Thank you

p0113 is air intake temperature sensor input above the minimum acceptable voltage
p0118 is engine coolant temperature sensor input above maximum acceptable voltage
p1298 is a prolonged lean condition is detected during wide open throttle
p1509 i dont know what it is?
so change these 2 sensor first after try to erase all the code
i have the same problem on my 98 i order these 2 sensor now i wait so i send you a feedback i will give you a link for the trouble code for grand cherokee
www.wjjeeps.com/faultcodes.htm#1200 (http://www.wjjeeps.com/faultcodes.htm#1200)
ciao
bob