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P0418 OBD-II Trouble Code: Secondary Air Injection System Relay A circuit Malfunction
P0418 indicates that a problem has occurred in the secondary air injection system which causes engine hesitation when accelerating and stalling.

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Check engine light in code P0418
The air pump fuse is a 30 amp fuse that powers the pump. The "trigger" for the relay comes from the ignition switch, through a 10 amp fuse. Have you checked to see if the "trigger" wire to the relay...

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