DTC 19 - Crankshaft Position Reference Error: Notes

The crankshaft position sensor is a hall effect type sensor that monitors crankshaft position and speed There are 4 teeth 90 degrees apart on the front of the crankshaft sprocket that induce an alternating current in the sensor which is transmitted to the PCM. DTC 19 will set when 8 crankshaft position pulses are missed for every cam reference pulse.

PCM will default to backup fuel.

1. This step determines if DTC 19 is the result of a hard failure or an intermittent condition.
2. This step checks the 5-volt reference circuit.
3. This step checks the ground circuit.
4. This step checks the sensor and harness wiring.