HE62 - Check Orifice Tube Assembly and DPFE Sensor

- Inspect the connection marked "VREF" on the DPFE sensor for plugging or damage at the sensor.

- inspect the intake manifold side pressure pickup tube and orifice tube assembly for plugging, loose connection or damage.

- Is the DPFE sensor or orifice tube assembly plugged, loose or damaged?

YES -- SERVICE or REPLACE DPFE sensor or orifice tube assembly as necessary. Complete PCM reset to clear DTCs. Clearing Diagnostic Trouble Codes

Rerun quick test. Diagnostic Subroutines (DSR) - Extracting Codes

NO -- RECONNECT all components. GO to HE63. HE63 - Check DPFE Sensor Output - Apply Vacuum With Hand Pump