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DTC P1285: Cylinder Head Over Temperature Condition

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DTC P1285: CYLINDER HEAD OVER TEMPERATURE CONDITION

Description:  Indicates an engine overheat condition was sensed by the cylinder head temperature (CHT) sensor.
Possible Causes: 
  • Low engine coolant level
  • Base engine concerns
  • Engine cooling system concerns
  • CHT sensor concern
Diagnostic Aids:  On some applications when this fault occurs the engine temperature warning indicator illuminates or forces the temperature gauge to the full H (hot) zone. The warning indicator can be triggered by either grounding the engine temperature warning circuit when wired to the powertrain control module (PCM), or by sending a PCM network message to the instrument cluster (IC).
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to PINPOINT TEST DL .
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