Ignition Coil J Primary/Secondary Circuit - No Activity
The P0364 code means the vehicle's onboard diagnostic system has detected: Ignition Coil J Primary/Secondary Circuit - No Activity. This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- moderate
- Estimated cost
- $50 - $300 (parts and labor)
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Common Symptoms
- Check Engine Light illuminated
- Dead misfire on cylinder 10
- No spark to cylinder 10
- Engine vibration
Probable Causes (Ranked by Likelihood)
- Dead ignition coil J Very High
- Open circuit in coil wiring High
- Disconnected connector Moderate
- PCM driver failure Low
Step-by-Step Diagnostic Procedure
-
Check coil J connector.
-
Measure coil resistance.
-
Test PCM trigger signal with noid light.
-
Replace coil if dead.
Frequently Asked Questions
What does P0364 mean for my V10?
Ignition coil J for cylinder 10 has no electrical activity. The coil is dead, the wiring is broken, or the PCM is not commanding it.
Can I replace just one coil?
Yes, you can replace just the faulty coil, but it is common practice to replace all coils on high-mileage engines to prevent repeat failures.
How do I access cylinder 10 coil on a Ford V10?
On Ford 6.8L V10 engines, cylinder 10 is at the rear of the engine on the driver side. It may require intake manifold work for access.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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