Question

2007 Kia Sorento coming up with codes of P0101 and U0101. ESC light came on the day before the engine light came on.

Answer 1

HI there,

The P0101 is a code for the mass air flow sensor this can cause poor running quality. The U0101 indicates that there is a problem with the communication between the ECM and the TCM

Answer 2

P0101 KIA - Mass or Volume Air Flow Circuit Range/Performance Problem
Read more: https://www.autocodes.com/p0101_kia.html

U0101 KIA - Lost Communication With Transmission Control Module
Read more: https://www.autocodes.com/u0101_kia.html