Incorrect operation of the automatic transaxle oil temperature sensor may result in the following symptoms:
- MIL on, with DTCs P0711, P0712 or P0713.
This applies to 2010 and later Tucson, 2010 and later Santa Fe, 2011 and later Sonata GDI, Sonata HEV and Elantra, and 2012 and later Accent vehicles.
NOTE: According to Hyundai, do not replace the transaxle for oil temperature sensor codes. Instead, follow the repair procedure listed here.
- Attach a GDS, select vehicle and A/T menu and check for DTCs. Record the DTCs and description, and delete the DTCs.
- From the GDS, select:
- Vehicle and A/T menu
- Current Data
- Oil temperature sensor
Drive the vehicle and monitor the oil temperature sensor. If the sensor shows changing output while driving, the wiring currently has no open/short circuits. Go to Step 4. If there is no output or unchanging output while driving, go to Step 3.
- Check the wiring harness between the TCM and transaxle visually for a damaged wire or connector. Check for a short circuit to ground. If so, repair or replace the control harness.
- Refer to the DTC recorded in Step 1 and follow this repair procedure:
P0711 Oil temperature sensor – rationality
P0712 Oil temperature sensor – low
P0713 Oil temperature sensor – high
For any of the above, go to “Service Procedure” and replace the oil temperature sensor.
- Disconnect the battery.
- Remove the undercover under the transmission.
- Drain the radiator. Remove the lower radiator hose from the radiator.
- Drain the ATF.
- Remove the bolts that secure the valve body cover and remove the cover. Caution: Use a rubber hammer to tap the valve body cover on a corner until the cover is loose.
- Use a small screwdriver to pry the connector from the oil temperature sensor.
- Replace the oil temperature sensor with a new part. Torque the new sensor to a value of 7.2 – 8.7 ft.-lbs.
- Apply Permatex Ultra Gray Sealer or Hyundai Ultra Gray Gasket Sealer P/N 00231-13800 to the valve body cover and reinstall the cover. Torque the bolts to 7.2 – 8.7 ft.-lbs.
- Add approximately five quarts of Hyundai SPH-IV ATF (P/N 00232-19045). Check the level with the engine idling and with the transmission in Park when the ATF is at normal operating temperature (122 – 140 degrees F).
- Reinstall the lower radiator hose and add ethylene glycol engine coolant to the radiator. Check the level according to the appropriate shop manual.
- Clear the codes and test drive the vehicle for two driving cycles (two key-on to key-off driving cycles, including 1-2-3-4-5-6 upshifts and 6-5-4-3-2-1 downshifts). If the DTC returns, perform the following repair(s):
DTC P0711….Replace the internal harness, P/N 46307
DTC P0712….Repair or replace the control harness P/N 91400D
DTC P0713….Replace the PCM
OIL TEMPERATURE SENSOR P/N: 46386-3B000
INTERNAL HARNESS P/N: 46307-3B610
After removing the valve body cover bolts, tap with a rubber hammer to dislodge the cover.
Use a small screwdriver to pry the connector from the oil temperature sensor.