Possible causes – Faulty Engine Coolant Temperature (ECT) sensor for HST– Low engine coolant level– Engine Coolant Temperature (ECT) sensor for HST harness is open or shorted– Engine Coolant Temperature (ECT) sensor for HST electrical circuit poor connection– Faulty engine
Possible causes – Faulty Engine Coolant Temperature (ECT) sensor for HST– Low engine coolant level– Engine Coolant Temperature (ECT) sensor for HST harness is open or shorted– Engine Coolant Temperature (ECT) sensor for HST electrical circuit poor connection– Faulty engine
Possible causes – Faulty Engine Coolant Temperature (ECT) sensor for HST– Low engine coolant level– Engine Coolant Temperature (ECT) sensor for HST harness is open or shorted– Engine Coolant Temperature (ECT) sensor for HST electrical circuit poor connection– Faulty engine
Possible causes – Faulty Engine Coolant Temperature (ECT) sensor– Low engine coolant level– Engine Coolant Temperature (ECT) sensor harness is open or shorted– Engine Coolant Temperature (ECT) sensor electrical circuit poor connection– Faulty engine coolant thermostat Symptoms – Engine Light
Possible causes – Faulty Engine Coolant Temperature (ECT) sensor– Low engine coolant level– Engine Coolant Temperature (ECT) sensor harness is open or shorted– Engine Coolant Temperature (ECT) sensor electrical circuit poor connection– Faulty engine coolant thermostat Symptoms – Engine Light
Possible causes – Faulty Engine Coolant Temperature (ECT) sensor– Low engine coolant level– Engine Coolant Temperature (ECT) sensor harness is open or shorted– Engine Coolant Temperature (ECT) sensor electrical circuit poor connection– Faulty engine coolant thermostat Symptoms – Engine Light
Possible causes – Faulty Engine Coolant Temperature (ECT) sensor– Low engine coolant level– Engine Coolant Temperature (ECT) sensor harness is open or shorted– Engine Coolant Temperature (ECT) sensor electrical circuit poor connection– Faulty engine coolant thermostat Symptoms – Engine Light
Possible causes – Faulty Engine Coolant Temperature (ECT) sensor– Low engine coolant level– Engine Coolant Temperature (ECT) sensor harness is open or shorted– Engine Coolant Temperature (ECT) sensor electrical circuit poor connection– Faulty engine coolant thermostat Symptoms – Engine Light
Possible causes – Faulty Engine Coolant Temperature (ECT) sensor– Low engine coolant level– Engine Coolant Temperature (ECT) sensor harness is open or shorted– Engine Coolant Temperature (ECT) sensor electrical circuit poor connection– Faulty engine coolant thermostat Symptoms – Engine Light
Possible causes – Faulty HO2 Sensor Bank 1 Sensor 2– HO2 Sensor Bank 1 Sensor 2 harness is open or shorted– HO2 Sensor Bank 1 Sensor 2 circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon
Possible causes – Faulty HO2 Sensor Bank 1 Sensor 2– HO2 Sensor Bank 1 Sensor 2 harness is open or shorted– HO2 Sensor Bank 1 Sensor 2 circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon
Possible causes – Faulty HO2S Sensor Bank 1 Sensor 2– HO2S Sensor Bank 1 Sensor 2 harness is open or shorted– HO2S Sensor Bank 1 Sensor 2 electrical circuit poor connection Symptoms – Engine Light ON (or Service Engine Soon
Possible causes – Faulty Mass Air Flow Sensor– Mass Air Flow Sensor harness is open or shorted– Mass Air Flow Sensor electrical circuit poor connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)
Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1117 Description Engine Coolant Sensor intermittent/ECT Sensor Intermittent is one of the definitions for the P1117; however your vehicle’s manufacturer may have a different definition for the P1117 code.