# Service bulletin 20\-AT\-007H

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: 10172225
- Published by NHTSA: 2020\-03\-07
- Manufacturer's number: 20\-AT\-007H
- Manufacturer's date: 2020\-02\-20
- NHTSA component: EQUIPMENT; ELECTRICAL SYSTEM; POWER TRAIN

## NHTSA's summary

If you are servicing an applicable vehicle with a “Check Engine” light on and one or more of the DTC listed below, follow the repair procedure and replace the related solenoid and oil pressure harness.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10172225-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10172225-9999.pdf)

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

## Components

Electrical system, Equipment and accessories, Transmission and driveline

## Vehicles listed

- 2018 to 2019 HYUNDAI ACCENT
- 2017 to 2019 HYUNDAI ELANTRA
- 2018 to 2020 HYUNDAI ELANTRA GT
- 2018 to 2020 HYUNDAI KONA
- 2017 to 2018 HYUNDAI SANTA FE SPORT
- 2018 to 2020 HYUNDAI TUCSON
- 2019 to 2020 HYUNDAI VELOSTER

## Recalls for the same vehicles and component

- [21V127000](/recalls/nhtsa/21V127000.md), 2021-03-01: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
- [20V630000](/recalls/nhtsa/20V630000.md), 2020-10-13: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY:MANAGEMENT SYSTEM/ENERGY CONTROL MODULE \(BMS/BECM\):SOFTWARE; ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
- [2020091](/recalls/tc/2020091.md), 2020-02-28: Electrical
- [20V022000](/recalls/nhtsa/20V022000.md), 2020-01-17: EQUIPMENT:OTHER:LABELS
- [18V891000](/recalls/nhtsa/18V891000.md), 2018-12-14: VISIBILITY:SUN/MOON ROOF ASSEMBLY; ELECTRICAL SYSTEM

## Other bulletins for the same vehicles and component

- [26\-EM\-014H TSB](/bulletins/11037434.md), 2026-09-22, Service bulletin: ENGINE; ELECTRICAL SYSTEM. Some Tucson \(TL\) vehicles equipped with a 2.0L engine may exhibit a continued DTC P132600 after an ECM logic update has been performed per TSB 24\-01\-068H, Engine Monitoring Logic \(Service Campaign 966\). This bulletin provides instructions to inspect and resolve other engine mechanical issues and if DTC P132600 remains, then a procedure and manual mode passwords are given to perform the update again in manual mode to resolve this condition.
- [9C5 OL](/bulletins/11037293.md), 2026-09-11, Service campaign: ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. Hyundai has determined that certain Kona Electric and Ioniq Electric vehicles are eligible for a BMS software update. This update to the BMS software improves the system’s diagnostic capability.
- [9D3 OL](/bulletins/11037292.md), 2026-09-11, Service campaign: ENGINE; ELECTRICAL SYSTEM. Hyundai has become aware that your Hyundai Elantra equipped with a 2.0 ATK engine may have been incorrectly updated with Cylinder Noise Detection System \(CNDS\) software intended only for Korean\-built Elantra vehicles and may not meet specifications.
- [26\-01\-065H DCS](/bulletins/11036686.md), 2026-09-02, Service campaign: FUEL/PROPULSION SYSTEM; ELECTRICAL 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 Technical Service Bulletin \(TSB\) 26\-01\-065H to complete the BMS software update.
- [26\-01\-065H DN](/bulletins/11036685.md), 2026-09-02, Service campaign: FUEL/PROPULSION SYSTEM; ELECTRICAL 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.
- [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.
- [26\-01\-039H DN](/bulletins/11036204.md), 2026-08-15, Service campaign: ELECTRICAL SYSTEM; ENGINE. Certain Elantra \(ADA\) vehicles may have been incorrectly updated with Cylinder Noise Detection System \(CNDS\) software that can set DTC P132700; this software was intended only for Korean\-built Elantra \(AD\) vehicles. In addition, the California Air Resources Board has determined that these vehicles may be releasing air pollutants which exceed Federal and California standards.
- [26\-01\-039H TSB](/bulletins/11036202.md), 2026-08-15, Service campaign: ELECTRICAL SYSTEM; ENGINE. Certain Elantra \(ADA\) vehicles may have been incorrectly updated with Cylinder Noise Detection System \(CNDS\) software that can set DTC P132700; this software was intended only for Korean\-built Elantra \(AD\) vehicles. This bulletin provides instructions to perform a software update for the Engine Control Module \(ECM\) to revert to the original ROM ID, apply the emissions label under the hood, and provide the vehicle owner with Proof of Correction.
- [9C2 060518](/bulletins/11033705.md), 2026-06-06, Service campaign: ENGINE; ELECTRICAL SYSTEM. Following completion of Service Campaign 9C2 \(Theta II Emissions Improvement\), certain vehicles may exhibit a brief hesitation or rough shifting condition during cold start operation. If present, this condition is expected to occur only within approximately the first 1\-3 minutes after engine start, while the catalyst is reaching its normal operating temperature.
- [9C2 DCS 260518](/bulletins/11033701.md), 2026-06-06, Service campaign: ELECTRICAL SYSTEM; ENGINE. Following completion of Service Campaign 9C2 \(Theta II Emissions Improvement\), certain vehicles may exhibit a brief hesitation or rough shifting condition during cold start operation. If present, this condition is expected to occur only within approximately the first 1\-3 minutes after engine start, while the catalyst is reaching its normal operating temperature.

JSON: [/v1/bulletins/10172225](/v1/bulletins/10172225)

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