Ford P0661 OBD-II Trouble Code Definition: P0661 Intake Manifold Runner Control Valve Position Sensor Circuit Low Voltage P0661 Ford OBD-II Trouble CodeDescription: OBD Trouble Code P0661 Intake Manifold Tuning Valve Control Circuit Low What does the code mean? OBD-ii Code P0661 definition: The Intake Manifold Tuning Valve (IMTV) system is monitored for failure during continuous, key […]