P0406

Tests 1 - 3:

Tests 4 - 8:

Test 9:

SYMPTOM
P0406 - EGR POSITION SENSOR VOLTS TOO HIGH

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

SET CONDITION
EGR position sensor signal is greater than 4.91 volts 6 seconds.

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