over the holidays I got a scanner for a present so I finally broke it out and pulled the codes off my wifes 01 caravan this is what I got
P0403 EGR control circuit
P1491 radiator fan circuit
P0134 O2 circuit no activity bank 1 sensor 1
P0135 O2 heater circuit bank 1 sensor 1
P0442 Evaportative emission system leak detected small leak
P0445 Evaportative emission system detected gross leak
P0403 EGR control circuit
my question is that when I looked at the service manual it said that they are all tied in together and except for the radiator circuit and that I should look at one problem first as it might take care of both errors but doesn't state what that problem is. any suggestions on what that might be
Thanks

 

Replace the radiator fan relay, and ck the wiring going to the fan.

 

Help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!