Code P012, No Distributor Reference Signal: Notes

PCM checks for CAM HI pulses being received without REF HI (distributor) pulses. If PCM senses no reference pulses, engine will not start because fuel delivery system is triggered by pulses and Code P012 is set.

Possible causes of no distributor reference signals are, open or short on circuit No. 430 from ignition control module to PCM. Ignition control module unable to process pick-up coil signals to produce distributor reference pulses or grounded screw located on metal tab attached to plastic fitting on 5-wire harness.