P2328Ignition Coil J Primary Control Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P2328 marks the end of Ford's published coil list: it is the last entry in the driver short-circuit-high group of the 2012 and 2020–2023 OBD summaries, and the 2014 Ford code list puts it directly before the evaporative codes with a MIL flag. It tells you the switching wire of coil J, the tenth coil, carries voltage where the driver expects a path to ground, or that the coil draws a current outside the allowed window. The protective logic is the same as for the other Ford coils – fuel to that cylinder is withdrawn for 30 s and restored – while internal module faults of the coil driver IC are reported separately as P06D1. Use a wiring diagram for the V10 to find where the coil J lead runs next to battery feeds.
- What you may notice
- Check engine light on
- Cylinder 10 switched off at intervals
- Engine runs rough and pulls weakly
- Likely causes
- LikelyCoil J control wire shorted to battery voltage
- PossibleCoil J drawing abnormal current
- RarePCM output for coil J damaged
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €40 – €450
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.