P0185 Code: Meaning, Causes, and Symptoms | OBD2 Codes

P0185 – Fuel Temperature Sensor ‘B’ Circuit Malfunction

 

P0185 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

P0185 Possible Causes

 

Faulty Fuel Temperature Sensor,Fuel Temperature Sensor harness is open or shorted,Fuel Temperature Sensor circuit poor electrical connection

 

P0185 Description

 

The fuel tank temperature sensor is used to detect the fuel temperature inside the fuel tank. The sensor modifies a voltage signal from the Engine Control Module (ECM). The modified signal returns to the ECM as the fuel temperature input. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases.