here is the description of that code,there is 43 steps on the flow chart to repair this and could be a pain,it says to first check the air pipes and hoses,then vaccum hoses,there is a couple parts it talks about relacing before the pump.The control module activates the secondary air injection (AIR) system by grounding both the pump relay and the vacuum control solenoid control circuits simultaneously. This action energizes the AIR pump and the vacuum control solenoid. Vacuum is then applied, opening the valves. The pump then forces fresh air into the exhaust stream in order to accelerate catalyst operation. The control module will run up to 3 diagnostic tests using the pre-catalyst heated oxygen sensor (HO2S) voltage and Short Term FT to diagnose the system. The system can be diagnosed during normal secondary air injection operation or the control module can activate the system specifically for diagnostic purposes. If an air flow condition is detected, this diagnostic trouble code (DTC) will set. When inactive, the system prevents air flow in either direction. hope this helps
