EGR Solenoid Circuit Negative Deviation

Test 1 - 2:

Test 3:

SYMPTOM
P1403-EGR SOLENOID CIRCUIT NEGATIVE DEVIATION

TEST NOTE
This symptom is diagnosed using the test P1403-EGR SOLENOID CIRCUIT IMPROPER FLOW.

POSSIBLE CAUSES
- EGR valve
- Intermittent condition
- Engine control module - internal