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Service bulletins for the 2019 Hyundai Sonata

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.

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

About P1233 on the 2019 Hyundai Sonata: what the code means, and the bulletins and recalls about the same components.

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Only bulletins with trouble code: P1233 are shown. Show all

Bulletins, newest first
23-FL-004H2023-07-01. Service bulletin. ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). Certain 2015-2019MY Sonata (LFA) vehicles may intermittently exhibit reduced engine power, a “Crank/No Start” condition, and/or have DTC P1233 stored in the ECM due to an internally leaking fuel pump filter housing. For vehicles exhibiting one or more of these conditions, Hyundai is extending warranty coverage for fuel pump filter assembly repair or replacement to 15 years / 150,000 miles from the date of original retail delivery or date of first use (whichever occurs first). This service action and warranty extension is valid for original and subsequent owners.
23-FL-004H2023-07-01. Service bulletin. ENGINE AND ENGINE COOLING. Certain 2015-2019MY Sonata (LFA) vehicles may intermittently exhibit reduced engine power, a “Crank/No Start” condition, and/or have DTC P1233 stored in the ECM due to an internally leaking fuel pump filter housing. Hyundai is extending warranty coverage for fuel pump filter assembly repair or replacement to 15 years / 150,000 miles from the date of original retail delivery or date of first use (whichever occurs first) and is valid for original and subsequent owners. Follow the service procedure to inspect the low-pressure fuel pump operation and replace the fuel filter if necessary.

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