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.
P0191 — vehicles with official records naming this code
P0191 is named in NHTSA-published manufacturer communications or investigations for 28 vehicle families, including:
- Chevrolet Express model years 2006-2018 · 71 records
- GMC Savana model years 2006-2017 · 69 records
- Chevrolet Silverado model years 2006-2015, 2017 · 20 records
- Chevrolet Cruze model years 2014-2018 · 15 records
- GMC Sierra model years 2006-2013, 2017 · 14 records
- Mazda Mazda3 model years 2012-2014 · 14 records
- Chevrolet Equinox model years 2010-2019 · 13 records
- GMC Terrain model years 2010-2019 · 12 records
- Mazda CX-5 model years 2013-2014 · 8 records
- Buick LaCrosse model years 2010-2016 · 7 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 |
|---|---|---|---|---|---|
| P0191 | Fuel Rail Pressure Sensor Circuit Range/Performance Bank 1 | Engine & drivability | Generic | Not manufacturer-specific | Not classified |
No matching codes
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