P0404

Test 1 - 2:

Test 3 - 5:

Test 6 - 9:

Test 10:

SYMPTOM:
P0404 - EGR POSITION SENSOR PERFORMANCE

WHEN MONITORED

SET CONDITION
The EGR flow or valve movement is not what is expected.

POSSIBLE CAUSES
- Good trip equal to zero
- High resistance in 5 volt supply
- EGR Solenoid control CKT
- Intermittent condition
- EGR Sensor signal circuit open
- EGR Sensor signal circuit shorted to ground
- Sensor ground circuit open
- EGR Assembly (ground)
- PCM