Mercedes GLC 220d OM654 EGR Valve Fouling
Mercedes-Benz
GLC
2015
OM654 2.0 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 OM654 diesel in GLC 220d can develop EGR fouling above 100,000 miles. Lower rate than older OM651 but still a maintenance item. Cleaning costs £150-280.
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 GLC 2015 problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.
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