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Home >> Mercury >> 2009 >> Mariner Base, 2.5 7, AWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Powertrain DTC Charts & Descriptions (Except Diesel & Hybrid) >> DTC Diagnosis >> DTC P1489: - PCV Heater Control Circuit

DTC P1489: - PCV Heater Control Circuit

DTC 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 correctly connected.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to Pinpoint Test HG .