The Fuel Level Sensor(FLS) measures the fuel level in fuel tank and its information is used to supply the ECM with information regarding the monitoring condition of the EVAP canister purge system for leak detection. If the fuel level sensor is monitored for high or low stuck or difference between voltage of fuel level sensor and voltage deviation of fuel level sensor is exceeds limited value while driving, this is interpreted by the ECM as a fault
Checking output signals of fuel level sender under detecting condition, if the fuel level voltage is high than 10.162V ECM sets P2068.
Item
Detecting Condition
Possible cause
DTC Strategy
Signal check, high
Poor connection
Open or short to battery in Circuit
Faulty Fuel Sub Sender
Faulty Fuel Sender
Faulty ECM
Enable Conditions
9V < B+ volt < 16V
Engine speed > 500 rpm
Threshold value
Signal voltage > 10.162V
Diagnosis Time
5 sec
MIL On Condition
2 driving cycles
FLS
Normal Parameter
Float position
8/8
6/8
1/2
3/8
1/8
Warning Lamp ON
Sender-
Resistance(?)
4±1
16.6±1
58.2±1
71.6±1
Sub Sender-
53±1
95±1
-
Fuel volume(l)
70.5
52.5
37.5
30.0
14.5
9.5