P1217critical severityPowertrain

Engine Over Temperature

on 2002 Infiniti QX4 3.5L V6 · RWD

What this code means

Engine coolant has exceeded maximum safe operating temperature.

Symptoms

  • CEL
  • Temp warning light
  • Overheating
  • Steam
  • Power loss

Common causes

  • Faulty thermostat
  • Low coolant
  • Failed fan/clutch
  • Failed water pump
  • Blocked radiator

Diagnostic steps

  1. Check coolant level
  2. Test thermostat
  3. Inspect fan operation
  4. Test water pump
  5. Check for blockage

Repair notes

Replace thermostat or repair cooling system.

Other Powertrain codes on this vehicle

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