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Service bulletin 21-01-036H

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10201466
Published by NHTSA2021-09-17
Manufacturer's number21-01-036H
Manufacturer's date2021-08-03
NHTSA componentFUEL SYSTEM, GASOLINE:STORAGE:EVAPORATIVE EMISSIONS:HOSES/VALVES/SENSORS; EQUIPMENT

NHTSA's summary

2011-2015MY Sonata Hybrid (YF HEV) vehicles Onboard Refueling Vapor Recovery (ORVR) system may exceed its capacity in certain situations. This bulletin provides the procedure to install an Auxiliary Canister to increase the ORVR system capacity. There are no drivability concerns associated with this condition.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Equipment and accessories, Fuel system, Evaporative emissions

Vehicles listed
HYUNDAI SONATA HYBRID2011, 2012, 2013, 2014, 2015 (the catalog's model; the bulletin names a series or trim of it)

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
964DBP2021-09-17. Service bulletin. 2011-2015MY Sonata Hybrid (YFE) vehicles Onboard Refueling Vapor Recovery (ORVR) system may exceed its capacity in certain situations. This campaign provides information on the procedures to install an Auxiliary Canister to increase the ORVR system capacity. There are no drivability concerns associated with this condition.