C1259 on the 2020 Kia Rio
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
This code is specific to a manufacturer and is not described here. Its meaning is in the manufacturer's service information.
| TSB_CHA109 | 2021-02-02. Service bulletin. 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. |
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1 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.