Check Engine Light on Due to Faulty Idle Air Control Valve on Honda Pilot

On some models a faulty Idle Air Control (IAC) valve can cause an engine surge at idle and set a Check Engine Light (MIL). Replacing the faulty IAC valve will commonly correct this problem.

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Average mileage: 131,000 (72,000–180,000)
2 model years affected: 2003, 2004
6 people reported this problem
3 people shared problem details
2003 Honda Pilot141,000
Started with engine surging at idle. Then, while in driving in lower gear, the engine stays at higher rpms and does not shift smoothly (jumpy). After a period, engine light came on and VTM light also. More breaking power needed to slow vehicle and some bucking was noted.
5 people like thisFlag inappropiate
2003 Honda Pilot180,000
Also had a high idle and hard shift from park to drive or reverse. Replaced the IAC. Fairly easy to do.
check engine light went on. previous earlier experienced idling problems.
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When I start my pilot in the morning, the idle is rough and could stall until it warms up

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