P0403

Tests 1 - 2:

Tests 3 - 7:

Test 8:

SYMPTOM
P0403 - EGR SOLENOID CIRCUIT

WHEN MONITORED
With the ignition key ON and engine running and battery voltage > 10.4 volts.

SET CONDITION
The EGR solenoid control circuit is not in the expected state when requested to operate by the PCM.

POSSIBLE CAUSES
- ASD relay output circuit open
- EGR solenoid defective
- EGR solenoid circuit wiring harness intermittent defect
- EGR solenoid circuit wiring harness observable defect
- EGR solenoid control circuit open
- EGR solenoid control circuit shorted to ground
- PCM defective