Mercedes E-Class Exhaust Temperature Sensor Fault P0545
Mercedes-Benz
E-Class
2009
OM651 2.2 CDI
⚡ Quick Summary
Severity Level
Low
Safe to Drive?
⚠️ Drive with Caution
Safety Impact
Indirect risk — worth monitoring, not urgent
Urgency Level
🟢 Low Priority
P0545 exhaust gas temperature sensor fault on E220d CDI indicates a failed EGT sensor before the DPF. The sensor monitors DPF temperature during regeneration. Sensor replacement costs £60-150.
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 E-Class 2009 problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.
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