# Transport Canada recall 2021666

A recall listed here may apply to a vehicle of this year, make and model. Only the manufacturer can say whether it applies to one vehicle: check the VIN with the official lookups.

- Published by: Transport Canada \(Canada\)
- Campaign number: 2021666
- Manufacturer's number: RC153
- Reported: 2021\-11\-01
- Component: Engine
- Notification type: Safety Mfr
- Units potentially affected: 712

## What is wrong

Issue:

On certain vehicles equipped with a 2.0 L Nu GDI engine, the connecting rod bearings can become damaged. If this happens, the engine could make abnormal knocking noises and/or the oil pressure warning light may turn on. If you continue to drive the vehicle with these symptoms, the engine could fail and/or a fire could occur. An engine failure can cause a sudden loss of power with an inability to restart.

Note: Only the Optima Hybrid and Plug\-In Hybrid \(PHEV\) models are affected by this recall.

Safety Risk:

A sudden loss of engine power could increase the risk of a crash. An engine failure could also create the risk of a fire.

Corrective Actions:

Kia will notify owners by mail and instruct you to take your vehicle to a dealer for an engine inspection test, to determine if there is bearing damage. If damage is found, the engine will be replaced. Dealers will also install a knock sensor detection system \(KSDS\) software that will prevent engine damage from potential excessive connecting rod bearing wear.

Note: Kia recommends that you should always follow the correct vehicle maintenance schedule, which is printed in the Owner's Manual. If you experience unusual engine noise, reduced power, or a check engine/oil warning light, Kia advises you to immediately visit a Kia dealership to have your vehicle diagnosed.


## Vehicles this campaign lists

- [2017 KIA OPTIMA](/makes/kia/optima/2017/recalls.md)
- [2018 KIA OPTIMA](/makes/kia/optima/2018/recalls.md)

## Bulletins for the same vehicles and component

A bulletin is the manufacturer's note to its dealers. It is not part of this recall.

- [SC340\_TSB\_R5](/bulletins/11031854.md), 2026-05-01, Emissions
- [SC340\_OWNR\_JF\&JFA\_104](/bulletins/11030390.md), 2026-04-01, Emissions
- [SC340\_TSB\_R4](/bulletins/11029979.md), 2026-03-13, Emissions
- [SC340\_OWNR\_JF103](/bulletins/11026899.md), 2026-01-03, Emissions
- [SC340\_TSB\_R3](/bulletins/11026533.md), 2025-12-10, Service bulletin
- [SC340\_OWNR\_JF102](/bulletins/11025898.md), 2025-12-02, Emissions
- [SC340\_OWNR\_JF101](/bulletins/11025897.md), 2025-12-02, Emissions
- [SC340\_TSB\_R2](/bulletins/11025892.md), 2025-12-02, Service bulletin
- [SC340\_TSB](/bulletins/11025889.md), 2025-12-02, Service bulletin
- [SC340\_TSB\_R1](/bulletins/11025859.md), 2025-12-01, Service bulletin

## Check a VIN

- [NHTSA recall lookup by VIN, United States](https://www.nhtsa.gov/recalls)
- [Transport Canada recall search, Canada](https://wwwapps.tc.gc.ca/Saf-Sec-Sur/7/VRDB-BDRV/search-recherche/menu.aspx?lang=eng)

Contains information licensed under the Open Government Licence – Canada.

JSON: [/v1/recalls/tc/2021666](/v1/recalls/tc/2021666)

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