Honda CR-V 2017–2021 — technical service bulletin
Bulletin A21-081 · NHTSA communication 10203501 · issued Nov 13, 2021
Technical service bulletin
communication type
Electrical System
component
2017–2021
model years
5
vehicle entries
Official summary
Service Bulletin - The MIL comes on with DTCs P0441 (EVAP System Purge Flow Malfunction) P04F1 (EVAP System Low Purge Flow Detected).
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.