What does code P0201 mean on a Mercedes-Benz and is it safe to drive?
P0201: Injector Circuit / Open — Cylinder 1. Here's what it means on your Mercedes-Benz, what usually causes it, what repairs typically cost, and how safe it is to keep driving.
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What this code means
The PCM detected an open circuit or a fault in the fuel injector circuit for cylinder 1. This means the injector may not be firing, causing a misfire and unburned fuel entering the exhaust.
Common causes for your Mercedes-Benz
- Failed fuel injector on cylinder 1
- Damaged or corroded injector wiring / connector
- Faulty PCM injector driver
- Clogged injector not responding
Symptoms
- Check Engine Light, often with misfire codes
- Rough idle and misfire on cylinder 1
- Loss of power
- Fuel smell from exhaust
Typical fixes
- Test and replace fuel injector on cylinder 1
- Inspect and repair injector wiring harness
- Clean injectors (if partially clogged)
Repair cost range
For a Mercedes-Benz, repairs for P0201 often fall between $150 and $500, depending on the cause and whether you use OEM or aftermarket parts. Labor rates vary by location.