Some 2020 Explorer/Aviator vehicles equipped with a 2.3L/3.0L EcoBoost engine may exhibit an illuminated malfunction indicator lamp (MIL) and/or Engine Coolant Over Temperature warning with diagnostic trouble codes (DTCs) P0116, P0117, P0118, P0119, P0128, P0217, P0330, P1026, P1299, and/or P130D. This may be due to the engine coolant temperature (ECT) sensor or ECT sensor wiring harness. For 2.3L vehicles, replace the ECT sensor and pigtail wiring connector (GU2Z-14S411-KA). For 3.0L vehicles, replace the ECT and knock sensor. To aid with the engineering investigation, do not disconnect the wiring connector from the ECT sensor during disassembly. Leave the connector on the sensor in case parts are called back for analysis.
