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DTC P1489: PCV Heater Control Circuit

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: 
  • PCVHC circuit open, short to ground or voltage
  • IGN START/RUN circuit open or short to ground
  • Damaged positive crankcase ventilation (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 .
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