Symptom hub
Engine Overheating: Fan, Thermostat, and Coolant-Temperature Codes to Check First
When the temperature climbs in traffic, at idle, or under heat load, the smart split is between airflow problems, coolant-temperature data problems, and true coolant-flow faults. Fan-control codes matter most when the car cools down again once road speed picks up.
Likely related codes
Start your diagnostic path here
P0117 — Engine Coolant Temperature Circuit Low Input P0118 — Engine Coolant Temperature Circuit High Input P0119 — Engine Coolant Temperature Circuit Intermittent P0480 — Cooling Fan 1 Control Circuit Malfunction P0481 — Cooling Fan 2 Control Circuit Malfunction P0482 — Cooling Fan 3 Control Circuit Malfunction P0483 — Cooling Fan Rationality Check Malfunction P0484 — Cooling Fan Circuit Over Current P0485 — Cooling Fan Power/Ground Circuit Malfunction P2181 — Cooling System Performance P0217 — Engine Coolant Overtemperature Condition