P-code can refer to:
- p-code machine ("pseudo-code")
- Code used in the UCSD p-System ("Pascal system")
- P-code ("precision code") is also part of the Global Positioning System signal
- In the automotive industry, P-codes are engine diagnostic codes (also called fault codes) displayed by an OBD-II scanner. In Computer programming, a p-code machine or pseudo-code machine is a specification of a CPU whose instructions are expected to be executed UCSD Pascal or UCSD p-System was a portable highly machine independent Operating system. Basic concept of GPS operation A GPS receiver calculates its position by carefully timing the signals sent by the constellation of GPS Satellites high above the Earth The term refers to the format used to display the fault code, which consists of the letter P followed by four digits. See "Table of OBD-II Codes" for a list of these codes
- Precursor to Common Intermediate Language (MSIL). OBD-II PIDs On Board Diagnostics "Parameter IDs" are codes used to request data from a vehicle used as a diagnostic tool Common Intermediate Language (CIL pronounced either "sil" or "kil" (formerly called Microsoft Intermediate Language or MSIL is the lowest-level Human-readable Stands for Packaged Code
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