TECHNICAL SERVICE BULLETIN: SERVICE ACTION: MDPS LOGIC UPDATE FOR DTC C125901 & C111201 (SA456) - This bulletin provides the procedure to improve the logic of the Electronic Power Steering (EPS) software on some 2020MY Rio vehicles produced September 28, 2020 through November 21, 2020, which may exhibit reduced steering assist and MIL ON with DTC(s) C125901 and/or C111201.
