Acura TLX 2015–2020 — technical service bulletin
Bulletin B26-023 · NHTSA communication 11037720 · issued Sep 25, 2026
Technical service bulletin
communication type
Fuel/propulsion System
component
2015–2020
model years
6
vehicle entries
Official summary
Service Bulletin - The factory fuel fill pipe assembly may not have been manufactured to specification. As a result, small contamination particles inside the fuel fill neck may prevent the primary shut-off valve flap seal from sealing properly. This may result in a fuel smell from the fuel fill neck area and may cause DTC P0455 or P0456 (EVAP system leak detected) to be set.
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.