Faulty Suction Control Valve
Suction Control Valve harness is open or shorted
Suction Control Valve circuit poor electrical connection
Faulty Powertrain Control Module (PCM)
Engine Light ON (or Service Engine Soon Warning Light)
The Powertrain Control Module (PCM) monitors the Suction Control Valve Circuit current while the engine is running. If the PCM detects circuit current is more than 1 A when the suction control valve is off, the PCM determines that there is a malfunction in the suction control valve circuit.