CarFaultIQ

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.

  • 12,128 OBD-II codes
  • 18,805 reference definitions
  • 16,185 publicly searchable across 10,181 codes

Review-withheld definitions are excluded; lookup records are not published diagnostic pages.

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P0501 — vehicles with official records naming this code

P0501 is named in NHTSA-published manufacturer communications or investigations for 5 vehicle families, including:

  • Audi S4 model years 2010-2014 · 5 records
  • Audi S5 model years 2013-2014 · 2 records
  • Audi S6 model years 2013-2014 · 2 records
  • Audi S7 model years 2013-2014 · 2 records
  • Honda CR-V model years 1998-1999 · 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
P0501 Defective Vehicle Speed Sensor, Defective Speedometer, Vehicle Speed Sensor wiring or connector, Communication (CAN) bus problems, Defective transmission or differential Vehicle Speed Sensor drive gear Powertrain Manufacturer-specific Audi Not classified
P0501 Vehicle Speed Sensor A Circuit Range/Performance Powertrain Generic Not manufacturer-specific Not classified