Fuel Temperature Sensor is NTC thermistor installed in fuel supplying line. It senses the temperature of fuel supplied to high pressure pump. Fuel temperature is limited (engine power is limited) to keep fuel temperature from reaching at 120℃. This limit is to protect fuel line such as high pressure pump and injectors from damages due to rapid deterioration by vapor-lock phenomenon which can occur at high temperature or destruction of oil membrane.
P0183 is set when the voltage above 4.912V - maximum voltage of FTS output - is detected for more than 2.0 sec.. This code is due to 1)open or short to battery in FTS signal circuit or 2)open in ground circuit.
Item | Detecting Condition | Possible Cause | ||
DTC Strategy | ● Voltage monitoring | ● FTS circuit ● FTS component | ||
Enable Conditions | ● IG KEY "ON" | |||
Threshold Value | ● When output signal is above the maximum value.(above 4.912V) | |||
Diagnostic Time | ● 2.0 sec. | |||
Fail Safe | Fuel Cut | NO | ● Fuel temp. fixed at 85℃ | |
EGR Off | NO | |||
Fuel Limit | NO | |||
MIL | OFF | |||
Temperature | - 30℃ | - 20℃ | -10℃ | 0℃ | 20℃ |
Resistance | 22.22~31.78㏀ | 13.24~18.10㏀ | 8.16~10.74㏀ | 5.18~6.60㏀ | 2.27~2.73㏀ |
Temperature | 40℃ | 50℃ | 60℃ | 70℃ | |
Resistance | 1.059~1.281㏀ | 0.748~0.904㏀ | 0.538~0.650㏀ | 0.392~0.476㏀ |
