Honda Civic 2019–2020 — technical service bulletin
Bulletin A20-021 · NHTSA communication 10172007 · issued Feb 28, 2020
Technical service bulletin
communication type
Electrical System
component
2019–2020
model years
2
vehicle entries
Official summary
Service Bulletin - The HFL system freezes during or after a phone call.
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.