Automotive Acronyms P

Acronym	Definition	Notes / What Is / Who Is
PAACE	Pan American Automotive Components Expo	International trade show group for the automotive aftermarket.
PAIR	pulsed secondary air injection	Introduces air into the exhaust manifold to help reduce emissions.
P/B	power brakes	Vacuum assisted brakes
PBEA	Paint Body and Equipment Association	Segment of AAIA
PCM	powertrain control module	See ECM
PCV	positive crankcase ventilation	Removal of blow by exhaust gas inside of an engine's oil system.
PIES	Product Information Exchange Standard	Developed by AAIA
P/N or PN	part number	Used in the auto parts industry
PPM	parts per million	Unit of measurement
PRI	Performance Racing Industry	Produces a magazine for the motorsports industry.
PROM	programmed read only memory	computer chip that is pre programmed at the factory and can not be changed
PS	power steering	Steering assisted by hydraulics
PSA	pressure switch assembly	Sensor
PSI	pounds per square inch	Unit of measurement
PSP	power steering pressure	Hydraulic pressure
pt.	pint	Unit of measurement
PVA	ported vacuum advance	Distributor control
PVS	ported vacuum switch	Switch actuated by engine vacuum
PWA	Performance Warehouse Association	Founded in 1971, participates in jobber / retailer support programs.

Note: An Acronym is a abbreviation that is formed using the individual letter components in a phrase, name, organization or thing. Listings on this page are used throughout the automotive industry.

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