2019 Mercedes-Benz P0301: What It Means & Is It Safe to Drive?
P0301 on the 2019 Mercedes-Benz: Cylinder 1 Misfire Detected. Here's what it means, what usually causes it, what repairs typically cost, and whether it's safe to keep driving.
What this code means
The PCM has detected a misfire specifically on cylinder 1. Similar to P0300, but pinned to a single cylinder.
Common causes on the 2019 Mercedes-Benz
- Worn or fouled spark plug on cylinder 1
- Failing ignition coil or coil-on-plug
- Leaking or clogged fuel injector
- Low compression in cylinder 1
Symptoms
- Check Engine Light (often flashing when misfire is severe)
- Rough idle or shaking, especially at low RPM
- Loss of power under load
Typical fixes
- Replace spark plug and/or coil on cylinder 1
- Test and clean or replace the injector
- Perform compression test and repair internal issues if needed
Repair cost range
For a 2019 Mercedes-Benz, repairs for P0301 typically fall between $150 and $900, depending on the root cause and labor rates in your area.
Known issues on Mercedes-Benz
Mercedes M272 V6 P0301 is often related to the balance shaft gear failure—a known and expensive issue on M272 engines built before 2008. A worn balance shaft gear can cause timing irregularities that trigger cylinder-specific misfires. Verify balance shaft timing before condemning the ignition system.
Most commonly affected models