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Service bulletins for the 2016 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.

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

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Only bulletins with component: Wiring and fuses are shown. Show all

Bulletins, newest first
19-01-006H-42019-11-18. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM:WIRING. 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. ELECTRICAL SYSTEM:WIRING. 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.
5NP-A8G2W-092016-09-29. Service bulletin. ELECTRICAL SYSTEM:WIRING; ENGINE. "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."
16-01-0202016-07-14. Service bulletin. ELECTRICAL SYSTEM:WIRING; ENGINE AND ENGINE COOLING. 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.

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