Any process that activates or increases the frequency, rate or extent of L-arginine import across plasma membrane.
Synonyms:
exact_synonym:
activation of L-arginine uptake; positive regulation of L-arginine import into cell; positive regulation of L-arginine uptake; up regulation of L-arginine import; up regulation of L-arginine uptake; up-regulation of L-arginine import into cell; upregulation of L-arginine import; upregulation of L-arginine import into cell; upregulation of L-arginine uptake
narrow_synonym:
activation of L-arginine import; activation of L-arginine import across plasma membrane; activation of L-arginine import into cell