OBD Code P0189

Fuel Temperature Sensor B Circuit Intermittent

What’s mean?

OBD2 Code P0189 Definition:
The fuel tank temperature sensor is used to detect the fuel temperature inside the fuel tank. The sensor modifies a voltage signal from the 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.

Symptoms

Possible sumptoms of P0189
– Engine Light ON (or Service Engine Soon Warning Light)

Possible Causes

Possible causes of P0189
– Harness or connectors (The sensor circuit is open or shorted) – Fuel tank temperature sensor may be faulty

Possible Solutions

Replaced Fuel Temperature Sensor