Honda CR-V 2017–2021 — technical service bulletin
Bulletin A21090A · NHTSA communication 10202030 · issued Sep 25, 2021
Technical service bulletin
communication type
Visibility
component
2017–2021
model years
5
vehicle entries
Official summary
ServiceNews Article - If you are inspecting this particular CR-V and notice oil residue on the A/C discharge and suction hoses, it's not always an indication that the hoses are leaking refrigerant. The source of oil residue can potentially come from other components.
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.