P0188 - Fuel Temperature Sensor 'B' Circuit High Input
Repair Importance Level:
Repair Difficulty Level:
- Faulty Fuel Temperature Sensor
- Fuel Temperature Sensor harness is open or shorted
- Fuel Temperature Sensor circuit poor electrical connection
Replaced Fuel Temperature Sensor
- Engine Light ON (or Service Engine Soon Warning Light)
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.
P0188 Information for specific makes
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