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P0411 = Secondary Air Injection System (B2) - Incorrect Flow You should check the Secondary Air Injection System: Air Injection Pump, Air Injection Solenoid Valve, Air Hoses & Connections.
pump relay is in the No2 fascia plate which is situated just above the the box behind the Knee pad of the dash on the drivers side.Looking at the relays it is the first from the left. Hope that helps
HAVE THE SECONDARY AIR INJECTION SYSTEM CHECKED OUT.TO MAKE SURE ITS ELECTRIC MOTOR PUMP ASSEMBLY VACUUM VALVE SOLENOID COMBINATION AIR SHUT OFF CHECK VALVE AND TUBING IS INJECTING FRESH AIR TO EXHAUST MANIFOLD.CHECK IT FUSE AND RELAY.GLOW PLUG LIGHT.COULD MEAN A FAULTY GLOW PLUG FUSE OR RELAY PROBLEMS.
check for vacuum leaks around your manifold. or at the secondary air pump. worst case you could have a failed combination valve it sits on the back of your block hidden down low. try to apply vacuum to it. if it does not hold vacuum at all that will cause that issue.
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