I have a 300-7 with no known history on. It throws code CA2249 & CA559. I've put all new filters on, new fuel rail sensor. But codes stay on. Through the monitor at startup the duel high pressure is over 17,000 psi but drops to near 5,000 psi after a few minutes. Starts right up and idles nice. Has 13k hrs on. Any suggestions?
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