P0186 JEEP Fuel Temperature Sensor B Circuit Range/Performance

Possible causes

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

Tech description

Replaced Fuel Temperature Sensor

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)

P0186 JEEP 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.

P0186 JEEP Information for specific makes

P0186 JEEP FORD