P1119 NISSAN Possible Causes
- Faulty radiator coolant temperature sensor
- Radiator coolant temperature sensor harness is open or shorted
- Poor electrical connection in radiator coolant temperature sensor circuit
How to Fix P1119 NISSAN Code?
Start by checking the “possible causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
When is the Code Detected?
A malfunction is detected when an excessively high or low voltage from the radiator coolant temperature sensor is sent to the Engine Control Module (ECM).
Possible Symptoms
Engine light on (or service engine soon warning light)
P1119 NISSAN Meaning
The radiator coolant temperature sensor is installed on the radiator lower tank and used to detect radiator coolant temperature. The sensor modifies a voltage signal from the Engine Control Module (ECM) and returns the modified signal to the ECM as a radiator coolant temperature input. The sensor uses a thermistor sensitive to temperature change. The electrical resistance of the thermistor decreases as temperature increases. The ECM uses this signal to control the cooling fan speed control solenoid valve.