P1217 INFINITI Possible Causes
- Faulty thermostat
- Faulty cooling fan motor
- Cooling fan harness is open or shorted
- Poor electrical connection in the cooling fan circuit
- Engine Control Module (ECM) program
- Leaking radiator hose
- Leaking or clogged radiator
- Radiator cap
- Water pump leak or damage
How to Fix P1217 INFINITI Code?
Start by checking the “possible causes” listed above. Visually inspect the corresponding cable harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
Technical Notes
The cooling system thermostat is the most likely cause of the P1217 code.
When is the Code Detected?
– The cooling fan is not working properly (overheating)
– The cooling fan system is not working properly (overheating)
– Engine coolant was not added to the system using the proper filling method
– Engine coolant is not within the specified range.
Possible Symptoms
- Engine light on (or engine service warning light soon)
- Engine overheating
P1217 INFINITI Meaning
The Engine Control Module (ECM) controls the cooling fan based on vehicle speed, engine coolant temperature, refrigerant pressure, and air conditioner operation signal. The control system has a 3-step command [HIGH / LOW / OFF].
If the cooling fan or another component of the cooling system malfunctions, the engine coolant temperature increases. When the engine coolant temperature reaches an abnormally high temperature condition, a malfunction is indicated.