P1516 Buick Idle Air Control Solenoid Signal 4 Circuit Low Input

P1517 Buick Intake Manifold Runner Control Input Error

Possible causes
– Intake Manifold Runner Control (IMRC) harness is open or shorted
– Intake Manifold Runner Control (IMRC) circuit poor electrical connection
– Faulty Intake Manifold Runner Control (IMRC) actuator
– Faulty Engine Control Module (ECM)
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P1517 Buick Description

The Intake Manifold Runner Control (IMRC) is monitored for failure during continuous or key ON engine OFF self-test.

Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick Enclave – Buick Encore – Buick Rainier – Buick Rendezvous – Buick Terraza – Buick Riviera