2000 Villager Estate OBDII Codes

I have continuosly illuminated CEL and OBDII reports the following trouble codes:

P1446 Evaporative Vac Solenoid Circuit Malfunction
P0325 The PCM has determined that a malfunction exists in the electrical circuit for knock sensor 1. (Bank 1 or single single sensor) (Bank 1 identifies the location of cylinder #1, while bank 2 identiifes the cylinders on the opposite bank)

Anyone seen this before or have recommendations for a do-it-yourselfer? Would prefer not taking it in to the shop.

Check the part for P1446 Evaporative Vac Solenoid Circuit Malfunction. Fix that and no more knock sensor code. Knock sensor are like smoke alarms they only work when there is another condtion present. Check your evaporator for a broken hose or a bad connections remove the plugs and re insert them.