Vehicle Questions and Answers
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The p1217 INFINITI code indicates a problem with the engine coolant temperature rising to a dangerously high level, likely due to a faulty thermostat. The thermostat is located in the thermostat housing along the lower coolant line and is responsible for monitoring the coolant temperature to determine the engine's operating temperature. If the thermostat malfunctions, it can lead to engine overheating, causing potential damage to the car. Overheating can result in the head gasket warping or cracking, requiring expensive repairs in the future. If your check engine light indicates a faulty thermostat, it is important to address the issue promptly. A full replacement costs around $200, so it's best not to delay the fix.
I've already changed the thermostat and pump. Is it possible that the radiator, which was last replaced in 2018, could be the issue? Today's date is July 19, 2022.
The p1217 code in an INFINITI vehicle is triggered when the engine coolant temperature rises to an unusually high level, signaling a malfunction.
Check out the coolant sensor.
You've got a coolant leak, most likely where the coolant hose connects to the firewall leading to the heater core.
Replace the radiator, install a new thermostat, and replace the water pump - all of the mentioned components were replaced.