What does code P0352 mean on a Mercedes-Benz and is it safe to drive?
P0352: Ignition Coil B Primary/Secondary Circuit Malfunction. 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 a fault in the primary or secondary circuit of ignition coil B (cylinder 2 coil). Causes, symptoms, and fixes are the same as P0351 but affect cylinder 2.
Common causes for your Mercedes-Benz
- Failed ignition coil on cylinder 2
- Fouled or worn spark plug on cylinder 2
- Damaged coil wiring or connector
- Faulty PCM driver circuit
Symptoms
- Check Engine Light on or flashing
- Rough idle / misfire on cylinder 2
- Reduced power and fuel economy
Typical fixes
- Replace ignition coil for cylinder 2
- Replace spark plug on cylinder 2
- Inspect coil wiring harness
Repair cost range
For a Mercedes-Benz, repairs for P0352 often fall between $80 and $300, depending on the cause and whether you use OEM or aftermarket parts. Labor rates vary by location.