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Service bulletin 5NP-A8G2W-09

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 id10081112
Published by NHTSA2016-09-29
Manufacturer's number5NP-A8G2W-09
Manufacturer's date2016-04-26
NHTSA componentELECTRICAL SYSTEM:WIRING; ENGINE

NHTSA's summary

"HYUNDAI MOTOR AMERICA IS CONDUCTING A SERVICE CAMPAIGN TO REVISE THE ENGINE ELECTRIC WATER PUMP WIRING ON CERTAIN 2016 MODEL YEAR SONATA HYBRID VEHICLES. SERVICE CAMPAIGN TDD PROVIDES A SERVICE PROCEDURE TO REVISE THE WIRING."

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Electrical system, Engine, Wiring and fuses

Vehicles listed
HYUNDAI SONATA HYBRID2016 (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
19-01-006H-42019-11-18. Service bulletin. Applicable vehicles with 2.0L Turbo and 2.4L GDI engines may experience the Check Engine warning lamp illuminated with DTC P1326. Follow the procedure to inspect the vehicle and install a wire harness extension and/or replacement engine based on the inspection results.
5NP-Z5P9U-092016-10-13. Service bulletin. SOME 2016 SONATA HYBRID AND PLUG-IN HYBRID VEHICLES MAY EXPERIENCE A POWER REDUCTION ACCOMPANIED BY ILLUMINATION OF MULTIPLE WARNING LIGHTS IN THE INSTRUMENT CLUSTER. THIS CONDITION MAY BE DUE TO AN INTERMITTENT ELECTRICAL SHORT BETWEEN THE VEHICLE’S 12 VOLT POWER AND THE CONTROL AREA NETWORK (CAN) “HIGH” SIGNAL IN A CIRCUIT BOARD IN THE ENGINE ELECTRIC WATER PUMP (EEWP). THIS BULLETIN DESCRIBES THE SERVICE PROCEDURE TO MODIFY THE EEWP WIRING HARNESS TO ELIMINATE THE POTENTIAL FOR A SHORT OF THE CAN SIGNAL.
16-01-0202016-07-14. Service bulletin. ENGINE ELECTRIC WATER PUMP WIRING (SERVICE CAMPAIGN TDD) Description: Some 2016 Sonata Hybrid and Plug-In Hybrid vehicles may experience a power reduction accompanied by illumination of multiple warning lights in the instrument cluster. This condition may be due to an intermittent electrical short between the vehicle’s 12 volt power and the Control Area Network (CAN) “High” signal in a circuit board in the Engine Electric Water Pump (EEWP). This bulletin describes the service procedure to modify the EEWP wiring harness to eliminate the potential for a short of the CAN signal.