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.
P0138 — vehicles with official records naming this code
P0138 is named in NHTSA-published manufacturer communications or investigations for 16 vehicle families, including:
- Nissan Maxima model years 2000-2002 · 9 records
- Infiniti I30 model years 2000-2001 · 8 records
- Nissan Pathfinder model years 1999-2000 · 6 records
- Infiniti QX4 model years 1999-2001 · 4 records
- Infiniti G20 model years 2000-2002 · 3 records
- Infiniti Q45 model years 1999-2001 · 3 records
- Nissan Armada model years 2018 · 3 records
- Honda Civic model years 2001 · 2 records
- Infiniti I35 model years 2002 · 2 records
- Nissan Frontier model years 2001-2002 · 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: 2 · Unique codes: 1.
| Code | Meaning | System | Scope | Manufacturer | Severity |
|---|---|---|---|---|---|
| P0138 | O2 Sensor Circuit High Voltage Bank 1 Sensor 2 | Engine & drivability | Generic | Not manufacturer-specific | Not classified |
| P0138 | HO2S12 High Voltage | Powertrain | Manufacturer-specific | Dodge | Not classified |
No matching codes
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