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P1489 - PCV Heater Control Circuit

WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2007 Mercury Mountaineer, 2007 Mercury Monterey, 2007 Mercury Montego, 2007 Mercury Milan, and 2007 Mercury Mariner. However, it is still accessible from the selected car via links, so may be relevant.
P1489 - PCV HEATER CONTROL CIRCUIT

Description:  This DTC sets when the powertrain control module (PCM) detects a positive crankcase ventilation (PCV) heater circuit failure.
Possible Causes: 
  • Open or shorted PCV circuit
  • Damaged PCV heater assembly
Diagnostic Aids:  Make sure the PCV valve is correct for the engine application and the PCV heater connector is properly connected.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All refer to PINPOINT TEST HG .
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