DTC P0320: No Crank Reference Signal At Pcm: Description

Crank reference signal is monitored during engine cranking. DTC will set in Powertrain Control Module (PCM) memory when PCM senses no Crankshaft Position (CKP) sensor signal during engine cranking, and at least 3 Camshaft Position (CMP) sensor signals have occurred. Possible causes for DTC to set are: defective tone wheel/flexplate, defective PCM, defective CKP sensor, defective connectors or defective wiring.