OBD-II Code Decoder
Search the licensed P, B, C, and U reference library by code, definition, system, or manufacturer. Reference-only results are not a complete diagnosis.
Review-withheld definitions are excluded; lookup records are not published diagnostic pages.
U0401 — vehicles with official records naming this code
U0401 is named in NHTSA-published manufacturer communications or investigations for 18 vehicle families, including:
- Chevrolet Suburban model years 2015-2019 · 13 records
- Chevrolet Tahoe model years 2015-2019 · 13 records
- GMC Yukon model years 2015-2019 · 13 records
- Chevrolet Corvette model years 2024-2025 · 10 records
- Cadillac Escalade model years 2015-2018 · 8 records
- Mazda CX-9 model years 2016-2017 · 7 records
- Chevrolet Silverado model years 2017 · 3 records
- GMC Sierra model years 2017 · 3 records
- Ford F-150 model years 2017-2018 · 2 records
- Ford Mustang model years 2019-2020 · 2 records
A code named in a manufacturer communication means the document refers to it for those vehicles. It is not a diagnosis of any car, and it does not mean the code is common on that vehicle.
Matching definitions: 1 · Unique codes: 1.
| Code | Meaning | System | Scope | Manufacturer | Severity |
|---|---|---|---|---|---|
| U0401 | Invalid Data Received From ECM/PCM A | Network / communication | Generic | Not manufacturer-specific | Not classified |
No matching codes
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