# Service bulletin PS647

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: 10172122
- Published by NHTSA: 2020\-03\-05
- Manufacturer's number: PS647
- Manufacturer's date: 2020\-02\-14
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

PITSTOP: ENGINE ELECTRIC WATER PUMP \(EWP\) CONNECTOR AND PIGTAIL ISSUES FOR DTC U045600 \- This Pitstop provides information regarding DTC U045600 on some 2017\-2020MY Niro \(P/HEV\) vehicles, which may set due to the EWP and/or harness connectors \(C102\) being contaminated with coolant. In the event that this DTC is set, throughly inspect the EWP and harness connectors which are located behind the Engine Coolant Temperature Sensor \(ECTS\) and are sometimes difficult to see.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10172122-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10172122-9999.pdf)

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

## Components

Engine

## Trouble codes named

U0456

## Vehicles listed

- 2017 to 2020 KIA NIRO
- 2017 to 2018 KIA NIRO PHEV
- 2020 KIA NIRO PHEV
- 2019 KIA NIRO PLUG\-IN HYBRID

## Recalls for the same vehicles and component

- [2018218](/recalls/tc/2018218.md), 2018-05-01: Engine

## Other bulletins for the same vehicles and component

- [TSB\_ENG222\_R8](/bulletins/11017109.md), 2025-04-18, Service bulletin: ENGINE. TECHNICAL SERVICE BULLETIN: EXCESSIVE OIL CONSUMPTION NU/GAMMA/THETA/KAPPA ENGINES \- This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information on diagnosing and/or repairing some 2011\-2024MY vehicles \(refer to the table on pages 9 and 10 for applicable models and engine\), which may exhibit a symptom of excessive oil consumption.
- [TSB\_ENG222\_R7](/bulletins/11014912.md), 2025-03-04, Service bulletin: ENGINE. TECHNICAL SERVICE BULLETIN: EXCESSIVE OIL CONSUMPTION NU/GAMMA/THETA/KAPPA ENGINES \- This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information on diagnosing and/or repairing some 2011\-2024MY vehicles \(refer to the tables on pages 8\-9 for applicable models and engine\), which may exhibit a symptom of excessive oil consumption.
- [TSB\_ELE270\_R2](/bulletins/10244290.md), 2023-11-03, Service bulletin: ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: SERVICE ACTION: INVERTER COOLANT/DEBRIS FLUSHING/REPLACEMENT FOR CLUSTER MESSAGE "REFILL INVERTER COOLANT" \(SA512\) \- This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information to flush out the inverter low\-conductivity coolant \(BSC\-1\) on certain 2019\-2022MY Niro EV \(DE EV\) vehicles produced from May 10, 2019 through October 4, 2021, which may exhibit a "Refill inverter coolant" message displayed on the instrument cluster due to poor flow of coolant/antifreeze inside the coolant pipes. In most cases, the inverter reservoir tank coolant may be filled to normal level and no DTC's are stored due to an increase operation of the electric water pump \(EWP\) that is 2,450 RPMs or more when checked.
- [TSB\_ELE270\_R1](/bulletins/10238226.md), 2023-07-01, Service bulletin: ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: SERVICE ACTION: INVERTER COOLANT/DEBRIS FLUSHING/REPLACEMENT FOR CLUSTER MESSAGE \&\#39;REFILL INVERTER COOLANT\&\#39; \(SA512\) \- This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information to flush out the inverter low\-conductivity coolant \(BSC\-1\) on certain 2019\-2022MY Niro EV \(DE EV\) vehicles produced from May 10, 2019 through October 4, 2021, which may exhibit a \&\#39;Refill inverter coolant\&\#39; message displayed on the instrument cluster due to poor flow of coolant/antifreeze inside the coolant pipes. In most cases, the inverter reservoir tank coolant may be filled to normal level and no DTC\&\#39;s are stored due to an increase operation of the electric water pump \(EWP\) that is 2,450 RPMs or more when checked.
- [TSB\_ELE270](/bulletins/10235407.md), 2023-05-04, Service bulletin: ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: SERVICE ACTION: INVERTER COOLANT/DEBRIS FLUSHING/REPLACEMENT FOR CLUSTER MESSAGE \&\#34;REFILL INVERTER COOLANT\&\#34; \(SA512\) \- This bulletin provides information to flush out the inverter low\-conductivity coolant on certain 2019\-2022MY Niro EV \(DE EV\) vehicles produced from May 10, 2019 through October 4, 2021, which may exhibit a \&\#34;Refill inverter coolant\&\#34; message displayed on the instrument cluster due to poor flow of coolant/antifreeze inside the coolant pipes. In most cases, the inverter reservoir tank coolant may be filled to normal level and no DTC\&\#39;s are stored due to an increase operation of the electric water pump \(EWP\) that is 2,450 RPMs or more when checked.
- [TSB\_ENG219\_R1](/bulletins/10220346.md), 2022-09-30, Service bulletin: ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. TECHNICAL SERVICE BULLETIN: MAINTENANCE REMINDER FEATURE \- This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area.This bulletin provides information on setting the "Service Interval Reminder" feature available on most 2014\-2023MY Kia vehicles \(refer to model list on page 2\). If the service interval reminder is set, the customer will be informed to have the next maintenance service performed, which can positively affect vehicle longevity and performance. Refer to TSB ENG241 for 2023MY\~ vehicles equipped with the Oil Life Management System \(OLMS\) feature not included in table on page 2.
- [PS730](/bulletins/10212200.md), 2022-06-03, Service bulletin: ENGINE AND ENGINE COOLING. PITSTOP: RANDOM MISFIRES/OVERHEATING DUE TO LOW COOLANT \- This Pitstop provides information to help identify one cause of low coolant, random misfires, and/or possible overheating on some 2017\-2022MY Niro HEV \(DE HEV\) and 2018\-2022MY Niro PHEV \(DE PHEV\) vehicles. The cause may be a small coolant leak in the EGR Cooler. Locating this leak may be difficult.
- [TSB\_ENG222\_R6](/bulletins/10209438.md), 2022-03-31, Service bulletin: ENGINE AND ENGINE COOLING. TECHNICAL SERVICE BULLETIN: EXCESSIVE OIL CONSUMPTION NU/GAMMA/THETA/KAPPA ENGINES \- This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information on diagnosing and/or repairing some 2011\-2021MY vehicles \(refer to the tables on pages 8\-9 for applicable models and engine\), which may exhibit a symptom of excessive oil consumption.
- [TSB\_ENG222\_R5](/bulletins/10206642.md), 2022-01-20, Service bulletin: ENGINE; ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION. TECHNICAL SERVICE BULLETIN: EXCESSIVE OIL CONSUMPTION NU/GAMMA/THETA/KAPPA ENGINES \- This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information on diagnosing and/or repairing some 2011\-2021MY vehicles \(refer to the tables on pages 8\-9 for applicable models and engine\), which may exhibit a symptom of excessive oil consumption.
- [TSB\_ENG222\_R4](/bulletins/10205426.md), 2021-12-23, Service bulletin: EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ENGINE AND ENGINE COOLING. TECHNICAL SERVICE BULLETIN: EXCESSIVE OIL CONSUMPTION NU/GAMMA/THETA/KAPPA ENGINES \- This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information on diagnosing and/or repairing some 2011\-2021MY vehicles \(refer to the tables on pages 8\-9 for applicable models and engine\), which may exhibit a symptom of excessive oil consumption.

JSON: [/v1/bulletins/10172122](/v1/bulletins/10172122)

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