This is a trouble code set for one of the emissions systems. It is called Secondary AIR injection. The PCM controls a relay that runs the air pump. It pumps air into the exhaust system and to speed up catalyst operation. The PCM monitors system operation by watching the Oxygen Sensors. There is a bulliten about water collecting in the hose at the AIR pump and corroding the electrical components. Take the hose off and see if water drains out.
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