Some 2011 and later Kia vehicles with 6-speed automatics (complete application list below) may turn on the check engine light and store one or more of the following trouble codes in computer memory: P0711, P0712 and P0713.
One likely cause for the trouble, Kia said, is a defective or out-of-range transaxle oil temperature sensor.
Replacing the sensor with an updated unit, part No. 463863B000, should turn off the light immediately.
Before ordering the new sensor, however, check the main wiring harness between the TCM and transaxle for fraying or a bad connection. Also check the appropriate ground circuits in the vehicle.
If everything looks good up to this point, proceed with swapping in the updated oil temperature sensor.
Vehicles that are susceptible to the illuminated check engine light and the above mentioned codes are 2011 and later Sorento, Sedona, Sportage, Optima and Forte models; and 2012 and later Rios and Souls.
"Factory Fixes" is written by Jim DePalma, a 30-year veteran of the auto repair business who has served stints as a service manager, parts manager and ASE-certified technician. His column provides vehicle manufacturers' authentic factory technical service bulletins (TSBs) that have been condensed for easier reading. Mr. DePalma advises that techs always check with a dealer or repair information system for the latest revisions before starting to work on a vehicle. He can be reached via e-mail at [email protected].