# Service bulletin 19\-01\-030H

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.

- Type: Service bulletin
- NHTSA id: 10167766
- Published by NHTSA: 2019\-11\-18
- Manufacturer's number: 19\-01\-030H
- Manufacturer's date: 2019\-10\-28
- NHTSA component: ENGINE; EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM

## NHTSA's summary

Certain 2017\-2019 vehicles may experience check engine light ?ON? with the following DTC stored: ? DTC P0456 \- Evaporative System \(EVAP\) \- Very Small LeakThese conditions primarily occur in the California coastal areas that are subject to marine layer cloud cover. Salt particulate deposit can form inside the Natural Vacuum Leak Detection \(NVLD\) which may cause intermittent operation prompting the DTC P0456 and the check engine light ?ON?. This bulletin provides the procedure to install a new Air Filter Kit with an updated filter to help prevent entry of the salt particulates. In addition, vehicles with check engine light ?ON? and DTC P0456 found stored in the Engine Control Module \(ECM\) must also replace the NVLD part.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10167766-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10167766-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system, Engine, Equipment and accessories

## Trouble codes named

P0456

## Vehicles listed

- 2017 to 2019 HYUNDAI IONIQ HYBRID

## Recalls for the same vehicles and component

- [21V944000](/recalls/nhtsa/21V944000.md), 2021-12-07: ELECTRICAL SYSTEM:PROPULSION SYSTEM:CHARGING:MODULE:ONBOARD \(OBCM\); ELECTRICAL SYSTEM:SOFTWARE
- [2018562](/recalls/tc/2018562.md), 2018-10-12: Electrical
- [2018203](/recalls/tc/2018203.md), 2018-04-25: Electrical
- [2017433](/recalls/tc/2017433.md), 2017-09-07: Electrical

## Other bulletins for the same vehicles and component

- [26\-EM\-016H TSB](/bulletins/11038458.md), 2026-10-14, Service bulletin: ENGINE. Some vehicles equipped with internal combustion engines may exhibit higher\-than\-expected engine oil consumption. This bulletin outlines the combustion chamber cleaning procedure for vehicles diagnosed with this condition. All internal combustion engines consume some engine oil during normal operation, depending on driving conditions and mileage, and this procedure should only be performed when deemed necessary based on inspection and diagnosis of the vehicle as outlined in TSB 26\-EM\-015H, Engine Oil Consumption – Inspection \& Repair Guidelines, or the latest revision.
- [26\-EM\-015H TSB](/bulletins/11038456.md), 2026-10-13, Service bulletin: ENGINE. Certain vehicles equipped with internal combustion engines may exhibit higher\-than\-expected engine oil consumption. This bulletin provides the inspection and repair procedures for vehicles exhibiting this condition. All internal combustion engines consume engine oil as part of normal engine operation. Oil consumption rates may vary based on mileage, operating conditions, driving habits, and maintenance history. Hyundai recommends following the prescribed maintenance schedule and periodically checking the engine oil level using the dipstick to maintain proper engine oil level.
- [26\-01\-065H TSB](/bulletins/11036311.md), 2026-08-21, Service campaign: ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. Certain Kona Electric \(OS EV\) and Ioniq Electric \(AE EV\) vehicles are eligible for a Battery Management System \(BMS\) software update. This update to the BMS software improves the system’s diagnostic capability. Follow this bulletin to complete the BMS software update.
- [25\-01\-024H\-1 TSB](/bulletins/11018575.md), 2025-05-27, Service campaign: ELECTRICAL SYSTEM. Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink Service functions. This may be due to an irregular disconnection on Verizon’s communication network. Follow the procedure in this TSB to reestablish the connection via the AVN pinhole reset method.
- [25\-01\-024H EM](/bulletins/11017111.md), 2025-04-18, Service campaign: ELECTRICAL SYSTEM. Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink Service functions. This may be due to an irregular disconnection on Verizon's communication network. If you are experiencing issues with remote commands, or other Bluelink services, please see the instructions below to reestablish the connection via the AVN pinhole reset method.
- [25\-01\-024H TSB](/bulletins/11015936.md), 2025-03-25, Service campaign: ELECTRICAL SYSTEM. Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink Service functions. This may be due to an irregular disconnection on Verizon’s communication network. Follow the procedure in this TSB to reestablish the connection via the AVN pinhole reset method.
- [23\-EM\-005H](/bulletins/10247189.md), 2023-12-15, Service bulletin: ENGINE AND ENGINE COOLING. This bulletin provides important checkpoint guidelines when performing engine oil and filter change services.
- [23\-01\-072H](/bulletins/10243318.md), 2023-10-02, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM:SOFTWARE. This bulletin provides the procedure to update the Hybrid Control Unit \(HCU\) / Low DC/DC Converter \(LDC\) software logic to eliminate internal P\-DTCs \(that are not viewable\) in certain 2019\-2021MY IONIQ Hybrid \(AE HEV\) and 2021MY IONIQ Plug\-in Hybrid \(AE PHEV\) vehicles.
- [23\-BE\-007H](/bulletins/10240087.md), 2023-08-02, Service bulletin: EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE; ELECTRICAL SYSTEM. This Service Information bulletin provides information on how to update the Apple Carplay software from Hyundai’s Navigation Updates page. The current version of Google Maps has 10 times the data transmission compared to the previous version. As a countermeasure, an update with a frame skip logic has been added to resolve the data congestion with Google Maps.
- [22\-EM\-010H](/bulletins/10217251.md), 2022-08-05, Service bulletin: ENGINE AND ENGINE COOLING. Follow the guidelines outlined in this bulletin to inspect and clean or replace certain components of the engine intake system accordingly during engine short block or sub\-assembly replacement.

JSON: [/v1/bulletins/10167766](/v1/bulletins/10167766)

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