Subaru Ascent 2023–2025 — technical service bulletin
Bulletin 09-136-25R · NHTSA communication 11018915 · issued May 29, 2025
Technical service bulletin
communication type
Electrical System
component
2023–2025
model years
11
vehicle entries
Official summary
This bulletin announces the availability of reprogramming files for the Engine Control Module (ECM). This logic was developed to address the following Diagnostic Trouble Code (DTC): P062F - Internal Control Module EEPROM Error. If DTC P062F is detected by the ECM, perform the reprogramming procedure outlined in this bulletin.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.