Possible causes

– Faulty Intake Manifold Tuning Valve (IMTV)
– Intake Manifold Tuning Valve harness is open or shorted
– Intake Manifold Tuning Valve circuit poor electrical connection

When is the code detected?

The Engine Control Module (ECM) has detected an improper signal from the Intake Manifold Tuning Valve (IMTV)

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)