Engine Error
P0403
Exhaust Gas Recirculation Circuit Malfunction
Severity
Medium
Symptoms
Engine pinging, failed emissions, check engine light
Common Causes
- Faulty EGR solenoid
- Wiring break or short to the EGR valve
- Corroded electrical connector
- Failed PCM
How to Fix
- 1 Test and replace EGR solenoid
- 2 Repair wiring harness
- 3 Clean EGR connector contacts
- 4 Test circuit with multimeter
Estimated Repair Cost
USD
$100
–
$350
EGR solenoid: $150 - $300