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P1489 - PCV Heater Control Circuit

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P1489 - PCV HEATER CONTROL CIRCUIT

Description:  This DTC sets when the PCM detects the actual PCVHC circuit voltage is less than or greater than the desired voltage.
Possible Causes: 
  • Damaged positive crankcase ventilation (PCV) heater assembly
  • PCVHC circuit open
  • PCVHC circuit short to ground
  • PCVHC circuit short to voltage
  • IGN START/RUN circuit open
  • IGN START/RUN circuit short to ground
  • IGN START/RUN circuit short to voltage
Diagnostic Aids:  Make sure the PCV system components are 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: POSITIVE CRANKCASE VENTILATION (PCV) SYSTEM .
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