Dodge P1031 Intake Manifold Air Control Valve Position Sensor Specification Not Attained Description OBD-II Trouble Code Description for P1031 Dodge HO2S Heater Current Monitor Control Circuit Sensors 1 OBD-II Trouble Code Description for P1031 Dodge A/F Sensor Heater Circuit Low (Bank 1 Sensor 1) VAG OBD-II Trouble Code Description for P1031 Dodge Intake manifold air control valve position sensor – specification not attained