Service bulletins for the 2020 Honda Civic
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
168 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
Only bulletins with component: Electrical system are shown. Show all
| ABOM04162020901 | 2020-05-05. Service bulletin. FORWARD COLLISION AVOIDANCE; ELECTRICAL SYSTEM; VEHICLE SPEED CONTROL. Dealer message - During production, the latest software version for the ACC/CMBS (adaptive cruise control/collision mitigation braking system), which is part of the VSA-modulator control unit, was not installed in the vehicle. Vehicles without the latest software may be unable to maintain speed after setting the ACC. |
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| A20-032 | 2020-05-05. Service bulletin. ELECTRICAL SYSTEM; FORWARD COLLISION AVOIDANCE; VEHICLE SPEED CONTROL. "Service bulletin - During production, the latest software version for the ACC/CMBS (adaptive cruise control/collision mitigation braking system), which is part of the VSA-modulator control unit, was not installed in the vehicle. Vehicles without the latest software may be unable to maintain speed after setting the ACC." |
| A20-021 | 2020-03-03. Service bulletin. ELECTRICAL SYSTEM. Service Bulletin - The HFL system freezes during or after a phone call. |
| A16040B | 2020-02-25. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); ELECTRICAL SYSTEM. ServiceNews Article - The 12-pin connector cavity in the back of the audio unit/audio-navigation unit is intentionally empty. It's used as a service port for other markets, so never try plugging into it. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.