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RecallGazette

Vehicle problems, recalls & safety intelligence

Subaru Ascent 2015–2025technical service bulletin

Bulletin 18-228-25 · NHTSA communication 11025790 · issued Nov 20, 2025

Technical service bulletin
communication type
Engine
component
2015–2025
model years
60
vehicle entries

Official summary

This bulletin announces the diagnostic procedures to be used when DTCs P2096 (POST CATALYST FUEL TRIM SYSTEM TOO LEAN BANK 1) and P2097 (POST CATALYST FUEL TRIM SYSTEM TOO RICH BANK 1) are detected by the Engine Control Module (ECM).

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.