C1252
0 owner reports and 28 manufacturer filings across 24 model years from Lexus, Toyota.
Where C1252 shows up
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2016 Lexus LS | Lane Departure | 2 | — |
| 2016 Toyota Highlander | Service Brakes | 2 | — |
| 2017 Toyota Prius c | Service Brakes | 2 | — |
| 2016 Toyota Prius c | Service Brakes | 2 | — |
| 2017 Lexus CT | Service Brakes | 1 | — |
| 2016 Lexus CT | Service Brakes | 1 | — |
| 2018 Lexus GS | Service Brakes | 1 | — |
| 2017 Lexus GS | Service Brakes | 1 | — |
| 2016 Lexus GS | Service Brakes | 1 | — |
| 2017 Lexus LS | Lane Departure | 1 | — |
| 2021 Lexus NX | Service Brakes | 1 | — |
| 2020 Lexus NX | Service Brakes | 1 | — |
| 2019 Lexus NX | Service Brakes | 1 | — |
| 2018 Lexus NX | Service Brakes | 1 | — |
| 2019 Lexus RX | Electronic Stability Control | 1 | — |
| 2018 Lexus RX | Electronic Stability Control | 1 | — |
| 2017 Lexus RX | Electronic Stability Control | 1 | — |
| 2016 Lexus RX | Lane Departure | 1 | — |
| 2019 Toyota Highlander | Service Brakes | 1 | — |
| 2018 Toyota Highlander | Service Brakes | 1 | — |
| 2017 Toyota Highlander | Service Brakes | 1 | — |
| 2018 Toyota Prius | Electronic Stability Control | 1 | — |
| 2017 Toyota Prius v | Lane Departure | 1 | — |
| 2016 Toyota Prius v | Lane Departure | 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
Manufacturer filings that name it
Source: NHTSA manufacturer communicationsService bulletins and campaigns whose filed summary names C1252. Quoting the document number at a service desk is often the fastest route to a diagnosis someone has already written down.
- T-SB-0014-252025-01-29 · Service Brakes
- Some 2017 – 2019 model year Highlander Hybrid vehicles may exhibit a condition in which the brake, ABS, and/or TRAC warning lights are on and/or a Check VSC message displays. One or more of the following specific Diagnostic Trouble Codes (DTCs): C1391, C1252, C1256, and/or C1253 will be stored in the vehicle memory to be used as verification. This condition may be caused by a small internal brake
- L-SB-0008-252025-01-29 · Service Brakes
- Some 2016 – 2018 model year GS 450h, 2013 – 2016 model year LS 600h, and 2018 – 2021 model year NX 300h vehicles may exhibit a condition in which the brake, ABS, and/or TRAC warning lights are on and/or a Check VSC message displays. One or more of the following specific Diagnostic Trouble Codes (DTCs) C1391, C1252, C1256, and/or C1253 will be stored in the vehicle memory to be used as verification
- 24TE01 Service campaign2024-11-04 · Service Brakes
- This Customer Support Program provides coverage as it applies to Brake Booster and Brake Booster Pump Assemblies on Certain 2014-2016 Model Year Highlander HV and certain 2017 Model Year Prius V Vehicles. The specific condition covered by this program is related to certain internal malfunctions of the Brake Booster Assembly. One or more of the following specific Diagnostic Trouble Codes (DTCs) C13
- LSB0008242024-02-21 · Service Brakes
- TSB: Some 2014 ? 2017 model year CT 200h vehicles may exhibit a condition in which the brake, ABS, and/or TRAC warning lights are on and/or a Check VSC message displays. One or more of the following specific Diagnostic Trouble Codes (DTCs) C1391, C1252, C1256, and/or C1253 will be stored in the vehicle memory to be used as verification. This condition may be caused by a small internal brake fluid
- TSB0009242024-02-21 · Service Brakes
- TSB: Some 2014 ? 2016 model year Highlander Hybrid vehicles may exhibit a condition in which the brake, ABS, and/or TRAC warning lights are on and/or a Check VSC message displays. One or more of the following specific Diagnostic Trouble Codes (DTCs): C1391, C1252, C1256, and/or C1253 will be stored in the vehicle memory to be used as verification. This condition may be caused by a small internal b
- TSB0008242024-02-21 · Service Brakes
- TSB:Some 2015 ? 2017 model year Prius C vehicles may exhibit a condition where the brake, ABS, and/or TRAC warning lights are on and/or a Check VSC message displays. One or more of the following Diagnostic Trouble Codes (DTCs): C1391, C1252, C1256, or C1253 will be stored in the vehicle memory to be used as verification. This condition may be caused by a small internal brake fluid leak ins
What C1252 means
Source: SAE J2012 / OBD-IIC1252 is a manufacturer-specific code: the second character is a 1, which under the OBD-II standard hands the definition to whoever built the vehicle. The same code can mean one thing on a Ford and something unrelated on a Hyundai. Any site that prints a single definition for it is guessing.
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 C1252
Source: NHTSA files and the OBD-II standardWhy does this page not define C1252?
Because it cannot be defined honestly. The second character of a trouble code says who owns its meaning, and a 1 or a 3 hands that to the manufacturer. Sites that print one definition for a manufacturer-specific code are showing you one automaker's meaning and hoping it is yours.
Can I keep driving with C1252 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.