Diagnostic Trouble Code: B1251
Diagnostic Trouble Code Name: Air Temperature Internal Sensor Circuit Open Input floats > 4.56V
Vehicle Make: Ford
Vehicle Model: Falcon (FG)
Diagnostic Code Entered By: ZerOne
Diagnostic Code Entered On: Wed Oct 06, 2010 11:00 pm
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Please Note: The DTC Information provided has been randomly generated.
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Diagnostic Trouble Code Description:
Intake Manifold Tuning Valve Solenoid Control Circuit
Possible Sensor Faults
ECM
Possible Related Diagnostic Trouble Codes
DTC P0660, P0661, or P0662
Circuit / System Description
An ignition?1 voltage is supplied directly to the intake manifold tuning (IMT) valve solenoid. The engine control module (ECM) controls the IMT valve solenoid by grounding the control circuit via an internal driver switch. The primary function of the driver is to supply ground for the IMT valve solenoid. The ECM can determine if the control circuit is open, shorted to ground, or shorted to a voltage by monitoring the voltage on the control circuit.
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