2005 Toyota Tundra 4.7L Air Injection Codes at Breaking News

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2005 Toyota Tundra 4.7L Air Injection Codes, Dorman® oe solutions™ secondary air injection pump. Some tundra owners face air injection pump repairs in excess of $4,000. I have an 05 toyota sequoia 4.7l that started running hot one day while idling.

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This code indicates the secondary air injection switching valve is stuck closed. The official codes it threw were p1604 (startability malfunction) p1605 (rough idling), p2440 (secondary air injection system switching valve stuck open bank 1) according to toyota dealership. I waited an hour and let it cool down before i added antifreeze because it was empty.

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They are both thrown when the oxygen sensors detect that there is not enough oxygen in the exhaust. The pcm also grounds the air combination valve vacuum control solenoid circuit, which energizes the air vacuum control solenoid. When these codes both appear at the same time, it. While toyota has since warrantied the air injection system on 2nd generation. But after 3 months of ownership on a 2013 4.6l 4x4 tundra, had the secondary aip fail.