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 a low signal from the Intake Manifold Tuning Valve (IMTV)

Symptoms

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