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p0111 is intake air sensor 1 ckt range/perf-- to fix this code it can be a bad iat sensor or in wiring to it. the iat sensor is usually in the big air hose, just after air cleaner going to throttle body. this sensor senses if the incoming air is cold or warm to set engine peramiters for best idle and driving under all conditions. it works in conjunction with the mass air flow sensor and sends this info to pcm.

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15y ago

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