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Service bulletins for the 2020 Honda Clarity

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.

11 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
A21-0842021-12-22. Service bulletin. ENGINE AND ENGINE COOLING. Service Bulletin - The MIL comes on with DTC P1F86 FC Cell Voltage Too Low (Caution).
A21-0842021-11-02. Service bulletin. ENGINE AND ENGINE COOLING. Service Bulletin - The MIL comes on with DTC P1F86 FC Cell Voltage Too Low (Caution).
A21-0082021-02-18. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ENGINE AND ENGINE COOLING. Service Bulletin - The Hybrid System Failure message comes on the MID, and DTC P1D8D (Generator Motor Inverter Short) is stored.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.