P0410 and hard to start when cold

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dgholt

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I have a error code P0410 for my Secondary Air Injection system and when the temperature gets colder it seems like I am not getting enough gas and have to crank it several times. Anyone have any information on either problem? Thanks.
 

clkelley

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The P0410 code refers to the emissions system. The AIR pump puts air to the exhaust to lower emissions. It takes in outside air and pumps it through two one-way check valves into each bank of the exhaust.

About 90% of the time that this code is set, the one-way check valves have worn out or failed and allow water (which occurs naturally in the exhaust) back into the pump. In any cold climate, especially in climates with higher humidity, this water may be more excessive. The water partially fills the AIR pump, it can then freeze. When the PCM commands the pump on, if the pump is frozen it cannot turn, thus overloading the circuit and "popping" the fuse.

There is a TSB about this.
 
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