P2181
4 owner reports and 52 manufacturer filings across 23 model years from Dodge, Hyundai, Kia, Volkswagen.
Where P2181 shows up
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2016 Volkswagen Golf / GTI | Equipment | 11 | — |
| 2016 Volkswagen Beetle | Equipment | 6 | — |
| 2021 Kia Seltos | Engine And Engine Cooling | 3 | — |
| 2021 Kia Soul | Engine And Engine Cooling | 3 | — |
| 2020 Kia Soul | Electrical System | 3 | — |
| 2016 Volkswagen CC | Power Train | 3 | — |
| 2016 Volkswagen Jetta | Visibility | 3 | — |
| 2016 Volkswagen Passat | Equipment | 3 | — |
| 2016 Volkswagen Tiguan | Electrical System | 3 | — |
| 2016 Volkswagen Touareg | Power Train | 3 | — |
| 2023 Hyundai Santa Fe | Engine | 1 | 1 |
| 2020 Hyundai Sonata | Engine | 1 | 1 |
| 2017 Dodge Journey | Electrical System | — | 1 |
| 2019 Hyundai Elantra | Engine And Engine Cooling | 1 | — |
| 2022 Hyundai Kona | Unspecified | — | 1 |
| 2023 Hyundai Santa Cruz | Engine And Engine Cooling | 1 | — |
| 2022 Hyundai Santa Cruz | Engine And Engine Cooling | 1 | — |
| 2022 Hyundai Santa Fe | Engine | 1 | — |
| 2021 Hyundai Santa Fe | Engine | 1 | — |
| 2022 Hyundai Sonata | Engine | 1 | — |
| 2021 Hyundai Sonata | Engine | 1 | — |
| 2023 Hyundai Tucson | Engine | 1 | — |
| 2022 Hyundai Tucson | Engine | 1 | — |
A model year appears here because the code is named in its record, not because every one of these vehicles sets it. Counts are mentions in the federal files, not failure rates — nobody publishes the denominator.
What it gets filed under
What owners said
Source: NHTSA complaint databaseOwners’ own words, one per nameplate, scrubbed of anything identifying. These are unverified reports filed with NHTSA — they are what was said, not a finding that it was true.
Multiple auto mechanics have indicated online that this is a very common problem with many Hyundai vehicles from 2020-2023 and can be a danger due to temperature control not being accurate for vehicles (Code P2181)
Hyundai Corporate is refusing to ground or provide alternative transportation for a documented, warranty-covered engine cooling fault (Code P2181), creating a highway stalling risk
At Carmax in Hillside I'll about 3 weeks after I bought this used 2022 Kona the engine check light came on with code p2181
Upon running a diagnostic, the following error codes displayed; P0420, P0340, P0197, P0117, P1D83, P2181(several codes showing up more than once showing permanent, pending)
Manufacturer filings that name it
Source: NHTSA manufacturer communicationsService bulletins and campaigns whose filed summary names P2181. Quoting the document number at a service desk is often the fastest route to a diagnosis someone has already written down.
- 24-EM-001H2024-07-23 · Engine
- Certain 20-22MY Sonata (DN8a), 21-23MY Santa Fe (TMa), and 22-23MY Tucson (NX4a) vehicles may experience a warning lamp illumination for a diagnostic trouble code P2181 that is related to the Integrated Thermal Management Module (ITM). Follow the service procedure outlined in this bulletin to replace the ITM.
- 23-EM-006H2023-10-30 · Engine And Engine Cooling
- Certain 2022-2023MY Santa Cruz (NXT) vehicles may experience a warning lamp illumination for a diagnostic trouble code P2181 that is related to the Integrated Thermal Management Module (ITM). Follow the service procedure outlined in this bulletin to replace the ITM with a revised part and reprogram the powertrain control module to update the control logic.
- TSB_ENG227_R22022-07-14 · Engine And Engine Cooling
- TECHNICAL SERVICE BULLETIN: SERVICE ACTION: MIL ON DTC P0605 AND/OR P2181 ECM LOGIC IMPROVEMENT (SA463) - 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 the procedure to improve the logic of the Engine Control Module (ECM) on some 2020-2021MY Soul (SK3) vehicles and 2021
- TSB_ENG227_R12022-01-13 · Engine And Engine Cooling — Engine — Engine Control Module (Ecu/Ecm)
- TECHNICAL SERVICE BULLETIN - SERVICE ACTION: MIL ON DTC P0605 AND/OR P2181 ECM LOGIC IMPROVEMENT (SA463) - 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 the procedure to improve the logic of the Engine Control Module (ECM) on some 2020-2021MY Soul (SK3) vehicles produc
- TSB_ENG2272021-02-23 · Equipment
- TECHNICAL SERVICE BULLETIN - SERVICE ACTION: MIL ON DTC P0605 AND/OR P2181 ECM LOGIC IMPROVEMENT (SA463) - This bulletin provides the procedure to improve the logic of the Engine Control Module (ECM) on some 2020-2021MY Soul (SK3) vehicles produced from November 24, 2018 through January 4, 2021 and 2021MY Seltos (SP2) vehicles produced from November 20, 2019 through January 12, 2021, equipped with
- 20-EM-002H2020-07-16 · Engine And Engine Cooling
- This bulletin provides a procedure for replacing the thermostat on certain 2019 Elantra vehicles. The thermostat may not function properly and may result in Diagnostic Trouble Codes P0128 or P2181. To correct this condition, follow the procedure outlined in this bulletin to replace the thermostat and air bleed the cooling system after refilling. No drivability issues are associated with this cond
What P2181 means
Source: SAE J2012 / OBD-IIP2181 sits in the generic range of the OBD-II standard, so it means the same thing on every vehicle sold in the United States — but WhichTrim does not carry a definition for it and will not invent one. What is on this page is the record: who named it and on what.
A stored code names the test that failed, never the part that caused it. It is the starting point of a diagnosis, not its conclusion — the same code has several possible causes and the cheap one is not always right.
Common questions about P2181
Source: NHTSA files and the OBD-II standardCan I keep driving with P2181 stored?
Nobody can answer that from the code alone, and a site that does is guessing. A steady light generally means the fault was logged and the vehicle is in a reduced-risk mode; a flashing light means stop soon, because a misfiring engine can destroy a catalytic converter in minutes. The safe read of this page is the mileage and the components, not permission.
Does a code mean the car is recalled?
No. Recalls are filed by campaign and matched by VIN, and none of them are triggered by a scan tool. If you want to know whether an open recall applies to one specific vehicle, check the VIN at nhtsa.gov/recalls — that is the only source that settles it.
Why do the counts here differ from other sites?
Because these are not estimates. Every number on this page is a count of documents in NHTSA's own files: manufacturer communications that name the code in their filed summary, and owner complaints that name it in the narrative. We do not model, weight or extrapolate them.
Will clearing the code fix it?
Clearing turns the light off and erases the freeze-frame data a technician would have used to work out what happened. If the condition is still there the code returns, usually within a few drive cycles, and the diagnosis now starts from less information than before.