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Home >> Ford >> 2002 >> Windstar Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 38 (Engine Controls - Self-Diagnostics - 2.2L) >> Diagnostic Tests >> DTC P1640: Control Module Output Circuit >> DTC Parameters
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DTC Parameters

WARNING: This page is about a different car, the 2002 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

DTC P1640 will set if A/C relay, main relay, EVAP vent solenoid or EVAP purge solenoid feedback voltage is more than 3.5 volts for more than 6 seconds when that device is commanded ON.