Honda Civic 2016–2026 — technical service bulletin
Bulletin A25-076 · NHTSA communication 11021745 · issued Jul 29, 2025
Technical service bulletin
communication type
Engine
component
2016–2026
model years
11
vehicle entries
Official summary
Service Bulletin - Oil leak at timing chain tensioner inspection cover due to possible insufficient sealant adhesion on inspection cover.
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.