Circuit Description

Oil Control Valve (OCV) varies oil pressure between 2 circuits changing intake camshaft position in relation to crankshaft angle.

DTC is set when ECM detects an open or short in OCV circuit. DTC P1656 is for bank No. 1 OCV. DTC P1663 is for bank No. 2 OCV. Possible causes are:

• Open or short in OCV circuit.
• Faulty OCV.
• Faulty ECM.