P0352 2010 Ford Fusion Code - Ignition Coil 'B' Primary/Secondary Circuit

P0352 indicates a malfunction in the primary or secondary circuit of Ignition Coil 'B,' which is typically responsible for creating the spark necessary for engine combustion.

Symptoms may include engine misfires, rough idling, reduced acceleration, poor fuel economy, and the Check Engine Light illuminating.

Possible causes include a faulty ignition coil, damaged wiring or connectors, a malfunctioning PCM (Powertrain Control Module), or issues with the coil circuit.

Diagnosis typically involves inspecting the ignition coil, checking the wiring and connectors for damage, and testing the coil circuit for continuity or resistance using a multimeter.

While the car may still be drivable, driving with this code can lead to engine damage, reduced performance, and poor fuel efficiency. It’s best to address the issue promptly.

Repairs may include replacing the ignition coil, repairing damaged wiring or connectors, or updating/replacing the PCM if necessary.

Repair costs vary, but replacing an ignition coil typically costs between $150 and $300, while wiring repairs or PCM replacement may cost more depending on labor and parts.

Common tools include a multimeter for testing circuits, basic hand tools for removing components, and an OBD-II scanner to clear the code after repairs.

Ignition Coil 'B' refers to the second coil in the ignition system, which is linked to a specific cylinder. Its exact location depends on the engine configuration.

Clearing the code alone won’t fix the underlying issue. The root cause, such as a faulty coil or damaged wiring, must be repaired to prevent the code from returning.