download DTC P1518: IMRC SHUTTER VALVE STUCK OPEN Condition PCM monitors intake manifold runner control (IMRC) circuit voltage. DTC is set when PCM terminal No. 3 voltage is less than 1.6 volt for 3.2 seconds when IMRC valve changes from open to closed position. Possible causes are: Short to ground in wiring between IMRC harness [...]
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