P0188 - Fuel Temperature Sensor 'B' Circuit High Input
- Fuel Temperature Sensor harness is open or shorted
- Fuel Temperature Sensor circuit poor electrical connection
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 MERCEDES-BENZ Fuel Temperature Sensor 'B' Circuit High Input
P0188 VOLKSWAGEN Fuel Temperature Sensor B Circuit High Input
I reset error code, disconnect battery for 1 minutes Drive about 50-60 miles and P0188 check engine...