Mercedes W220 S320 CDI EGR Valve Failure
Mercedes-Benz
S-Class
2003
OM613 3.2 CDI
⚡ Quick Summary
Severity Level
Medium
Safe to Drive?
✅ Safe to Drive
Safety Impact
No direct safety impact reported by owners
Urgency Level
🟡 Monitor Closely
The EGR valve on W220 S320 CDI accumulates carbon deposits causing limp mode and P0400 codes. The OM613 diesel EGR system is a known maintenance item. Cleaning resolves most cases at 120,000+ miles. Replacement EGR valve costs £250-500.
Onarım / Çözüm
No confirmed fixes yet. Share yours below.
⚠️ Yanlış Teşhis mi?
No commonly reported misdiagnoses for this fault yet. If you have replaced a part that did not fix this Mercedes-Benz S-Class 2003 problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.
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