An integrated heater and pressure sensor assembly for a positive crankcase ventilation (PCV) system for a vehicle internal combustion engine includes a heater assembly configured to fluidly couple a PCV/makeup air (MUA) line and a vehicle air induction system line, the heater assembly configured to heat fluid passing into and out of the PCV/MUA line, and a pressure sensor assembly integrated directly into the heater assembly, the pressure sensor assembly configured to sense pressure pulsations in the PCV/MUA line.