Honda Accord 2018–2022 — technical service bulletin
Bulletin A21-078 · NHTSA communication 10202859 · issued Oct 26, 2021
Technical service bulletin
communication type
Engine and Engine Cooling
component
2018–2022
model years
5
vehicle entries
Official summary
Service Bulletin - The MIL comes on with DTC P061B (PCM Internal Malfunction) is stored.
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.