Acura Ilx 2020–2022 — technical service bulletin
Bulletin B21-011 · NHTSA communication 10189906 · issued Mar 26, 2021
Technical service bulletin
communication type
Electrical System
component
2020–2022
model years
3
vehicle entries
Official summary
Service Bulletin - The MIL comes on with DTC U0155 (Lost Communication with Gauge Control Module).
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.