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Home >> Infiniti >> 2017 >> QX80 Base, RWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (DTCS) (3 Of 4) >> DTC/Circuit Diagnosis >> DTC P1217: Engine Over Temperature >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

NOTE:
  • If DTC P1217 is displayed with DTC UXXXX, perform the trouble diagnosis for DTC UXXXX. 
  • If DTC P1217 is displayed with DTC P0607, perform the trouble diagnosis for DTC P0607. Refer to  DTC LOGIC  . 
  • If DTC P1217 is displayed with DTC P0527, perform the trouble diagnosis for DTC P0527. Refer to  DTC LOGIC  . 

If the cooling fan or any of other components in the cooling system has a malfunction, engine coolant temperature increases.

When the engine coolant temperature reaches an abnormally high temperature condition, a malfunction is indicated.

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1217 Engine over temperature (Overheat)
  • Cooling fan does not operate properly (Overheat).
  • Cooling fan system does not operate properly (Overheat).
  • Engine coolant is not within the specified quantity.
  • Harness or connectors

    (The cooling fan circuit is open or shorted.)

  • IPDM E/R
  • Electrically - controlled cooling fan coupling
  • Cooling fan speed sensor
  • Radiator hose
  • Radiator
  • Reservoir tank cap
  • Water pump
  • Multi-way control valve
CAUTION:

When a malfunction is indicated, always replace the coolant. Refer to DRAINING and REFILLING . Also, replace the engine oil. Refer to DRAINING and REFILLING .

  1. Fill radiator with coolant up to specified level with a filling speed of 2 liters per minute. Always use coolant with the proper mixture ratio. Refer to ANTI-FREEZE COOLANT MIXTURE RATIO .
  2. After refilling coolant, run engine to ensure that no water-flow noise is emitted.