Mercedes C-Class Diesel Shaking At Idle — Injector
Mercedes-Benz
C-Class
2007
OM651 2.2 CDI
⚡ Quick Summary
Severity Level
Medium
Safe to Drive?
⚠️ Drive with Caution
Safety Impact
Indirect risk — worth monitoring, not urgent
Urgency Level
🟡 Monitor Closely
Rough shaking on W204 C220d at idle with P030X codes indicates a misfiring injector. OM651 injector balance test via Mercedes STAR identifies the faulty unit. Replacement injector costs £250-500. Always code new injectors after installation.
Repair / Solution
No confirmed fixes yet. Share yours below.
⚠️ Wrong Diagnosis?
No commonly reported misdiagnoses for this fault yet. If you have replaced a part that did not fix this Mercedes-Benz C-Class 2007 problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.
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