P0352 Ford F-150
Ignition Coil B Primary/Secondary Circuit Malfunction · Powertrain Code · High · Repair: Easy
What is P0352?
The ignition coil for cylinder 2 has an electrical fault.
When the Ford F-150 triggers code P0352 (ignition coil b primary/secondary circuit malfunction), it typically points to an issue in the powertrain system. This is a high severity code, so address it promptly to avoid further damage or safety concerns. Below you'll find the most common causes, symptoms, and repair options specific to the Ford F-150.
This repair is rated easy, meaning basic tools, no lift needed.
Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your Ford F-150.
Common Causes on Ford F-150
- Failed ignition coil on cylinder 2
- Damaged coil connector from heat exposure
- Wiring fault between PCM and coil pack
- Carbon tracking on the coil boot causing spark leak
Symptoms
- Check engine light
- Cylinder 2 misfire
- Rough idle
- Loss of power under acceleration
Notes for Ford F-150
Always replace the spark plug when replacing a coil pack — a worn plug can kill a new coil prematurely.