Exhaust Gas Recirculation Circuit Malfunction
8 articles · 1 makes affected
Safety Warning
Do not drive. Disconnect battery if safe to do so.
Based on owner reports. Always prioritize safety and consult a qualified mechanic.
What is P0403?
Exhaust Gas Recirculation (EGR) Circuit Malfunction. Electrical problem with the EGR valve control circuit.
Symptoms You May Notice
- ●Check engine light
- ●Failed emissions test
- ●Rough idle
- ●Poor performance
How to Fix It
- ●Replace EGR valve ($200-$500, intermediate)
- ●Repair wiring harness ($100-$300, intermediate)
- ●Replace EGR solenoid ($100-$250, intermediate)
Root Causesfor P0403
Based on 2 owner reports
Confirmed Causes
- 1egr. error code p0403 (exhaust gas)(50% of cases)
What Didn't Help
Repairs that owners tried but didn't fix the issue
Owner Statistics
Based on 111,349 real owner discussions • 2816 confirmed solutions
About This Data
Statistics are aggregated from real owner discussions on Reddit, automotive forums, and YouTube comments. All data is anonymized and represents actual repair experiences reported by vehicle owners.
Frequently Appears With
These codes often appear together in owner reports. Check these if you see P0403.
Based on analysis of 10 owner reports where multiple codes appeared together.