Code No. P0402:
EGR Flow Excessive
DIAGNOSIS CONTENT
Positive governor deviation above limit
TROUBLE JUDGMENT
Check Condition
- EGR flow is being introduced.
Judgment Criterion
- The EGR flow is above the upper limit.
FAIL SAFE FUNCTION
- EGR control is prohibited.
PROBABLE CAUSE
- Failed EGR control system
(Refer to Symptom Procedure - EGR Control Solenoid Valve System .)