The EGR valve needs to be cleaned or replaced, depending on your budget. As far as the canister circuit, follow the vacuum hose to the canister, and inline you will find a little solenoid. Unplug it, and set your DMM to ohms on the 200 scale. Measure the resistance at the solenoid. It should be between 40-90 ohms. If it isn't, replace it. If it tests good, clean the connector pins and reattach. Disconnect the neg battery cable, turn on the headlights for 10 minutes, reattach the battery cable, and run codes again.
Post your results.
Take care,
~Chris
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