This is a common problem on this year Santa-Fe, (erratic fuel level gauge)
The CEL (Check Engine Light) is on because of this, the PCM (Powertrain Control Module) monitors the level of fuel in the tank for enable criteria for the EVAP system component monitor. So if it "See's" an erratic signal, it will flag (set) a DTC (Diagnostic Trouble Code (s) as follows:
P0463= Fuel Level Sensor A Circuit High Input
P0464= Fuel Level Sensor A Circuit Intermittent
P2068= Fuel Level Sensor \'B\' Circuit High
More than likely you will need to replace BOTH senders because it is a recommended repair because both senders work in conjunction with each other.
NOTE: Random open circuit in one or both fuel level sensors. The sender with the fuel pump sweeps from 105 ohms empty to 4 ohms full. The sub sender sweeps 95 ohms empty to 4 ohms full. The senders are in series and any open circuit will set "High" codes. Recommend they be replaced as a set.
If it happens another time just loosen the gas tank cap and close it back again. It may help if the check engine light just comes up after no major tweaking with the car. Try it.
YOu are at warranty end! GO BACK TO HYUNDAI and ask them to check it out before you lose any warranty time! I would say GAS CAP and dirty idle air control valve!
Faulty sensor.
maybe your gas cap
Check dat engine... duh. Gotta listen to dat car or u never know when it might go out in highway and boom u prob introuble know wat im sayin dawg lol
In the petrol tank there is a "float" which measures the level of fuel in the tank, This maybe just be sticking lower than the actual level, or it could even be an electrical fault?
My gas tank was half full when I turned my car off. 30 minutes later I turned my car on and the meter was reading that my tank was empty. On top of this my check engine light was on. I went to the gas station immediately after and my car only took 8 gallons. Which it usually takes 16. The check engine light went off after I put gas in. This is the second time this has happened within the week. Any ideas?
Car: 2008 Hyundai Sante Fe 100,000 miles
