Diagnostic trouble code P0301 on Mercedes vehicles — what it means, the common
causes, and how to confirm the real fault before replacing parts.
What does P0301 mean?
P0301 indicates: Cylinder 1 Misfire Detected.
This relates to the Ignition / fuel / Combustion - cylinder 1 system.
Common causes of P0301
Coil/plug cyl 1
Injector cyl 1
Low compression cyl 1
Wiring to cyl 1 coil
What to check (live data)
Misfire counter cyl 1
Compression cyl 1 (psi)
Injector cyl 1 command
Parts often involved in P0301
ignition coil
spark plug
Don't replace parts until the root cause is confirmed — many of these codes are caused by wiring, a connector or an upstream fault, not the part itself.
Get the confirmed root cause for P0301 — on YOUR vehicle
A code is a symptom, not a diagnosis. AutoDX Pro cross-checks several
independent assessments, pinpoints the actual root cause, gives you the
exact tests to confirm it, and shows the parts — only after the cause is
confirmed. Reads your scan-tool photo and decodes your VIN with open
recalls.
P0301 is a diagnostic trouble code: Cylinder 1 Misfire Detected.
What are the common causes of P0301 on a Mercedes?
Common causes include: Coil/plug cyl 1, Injector cyl 1, Low compression cyl 1, Wiring to cyl 1 coil. The exact cause depends on the vehicle — confirm it before replacing parts.
Can I keep driving a Mercedes with P0301?
It depends on the fault and your symptoms. Some causes are minor, others can damage components or affect safety. Get the root cause confirmed before deciding.
How do I fix P0301 on a Mercedes?
Confirm the actual root cause with targeted tests first, then replace only the part that's at fault. AutoDX Pro gives you the root cause, the exact tests, and the parts for P0301 on your specific Mercedes.