P2666 – Fuel Shutoff Valve ‘B’ Control Circuit Low

P2666 Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P2666 Possible Causes

Faulty Fuel Shutoff Valve ‘B’,Fuel Shutoff Valve ‘B’ harness is open or shorted,Fuel Shutoff Valve ‘B’ circuit poor electrical connection

P2666 Description

The Engine Control Module (ECM) monitors the Fuel Shutoff Valve ‘B’ Control Circuit. The ECM sets the OBDII code when the Fuel Shutoff Valve ‘B’ Control Circuit is out of factory specifications.