Subaru Ascent 2020–2024 — technical service bulletin
Bulletin 09-114-23 · NHTSA communication 10246135 · issued Nov 27, 2023
Technical service bulletin
communication type
Engine and Engine Cooling
component
2020–2024
model years
13
vehicle entries
Official summary
This bulletin the announces availability of new reprogramming files for the Engine Control Module (ECM) developed to address cases of DTC P04AE (EVAP System Purge Control Valve â Bâ Performance / Stuck Open).
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.