2021 Ford P0352: What It Means & Is It Safe to Drive?
P0352 on the 2021 Ford: Ignition Coil B Primary/Secondary Circuit Malfunction. Here's what it means, what usually causes it, what repairs typically cost, and whether it's safe 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 on the 2021 Ford
- 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 2021 Ford, repairs for P0352 typically fall between $80 and $300, depending on the root cause and labor rates in your area.
Known issues on Ford
Ford P0352 on 5.4L and 4.6L engines means a failed COP coil on cylinder 2 (passenger front on most configurations). On 3-valve 5.4L engines, also inspect the spark plug thread condition before swapping the coil.
Most commonly affected models
F-150 2004–2014Mustang 2005–2014Explorer 2006–2014