P0405

Tests 1 - 3:

Tests 4 - 8:

SYMPTOM
P0405 - EGR POSITION SENSOR VOLTAGE TOO LOW

WHEN MONITORED
With the ignition ON and battery voltage above 10.0 volts.

SET CONDITION
EGR position sensor signal is less than 0.157 volts.

POSSIBLE CAUSES
- Wiring harness intermittent problem
- 5 volt supply circuit open
- EGR sensor signal circuit short to ground
- EGR sensor signal circuit shorted to sensor ground
- EGR sensor
- EGR sensor potentiometer
- PCM