P0360 moderate

Ignition Coil J Primary/Secondary Circuit Malfunction (Cylinder 10)

The P0360 code means the vehicle's onboard diagnostic system has detected: Ignition Coil J Primary/Secondary Circuit Malfunction (Cylinder 10). This is a moderate severity code.

My Garage →

Keep driving?: Short distances only
DIY difficulty: moderate
Estimated cost: $50 - $400 (parts and labor)

Recommended Tool

ANCEL AD310 OBD-II Scanner

Best-selling code reader on Amazon. Reads and clears check engine codes on any 1996+ vehicle. Under $30.

Check Price on Amazon

Affiliate link -- we earn a commission at no extra cost to you.

Every Tech Needs This

AstroAI Digital Multimeter

Essential for diagnosing sensor codes, checking voltage, and testing circuits. Under $15 and pays for itself on the first job.

Check Price on Amazon

Affiliate link -- we earn a commission at no extra cost to you.

Common Symptoms

Engine misfire on cylinder 10
Rough idle on V10 engine
Check Engine Light illuminated or flashing
Reduced power and acceleration
Poor fuel economy

Probable Causes (Ranked by Likelihood)

Faulty ignition coil on cylinder 10 Very High
Worn or fouled spark plug on cylinder 10 High
Damaged coil connector or wiring High
PCM coil driver circuit failure for cylinder 10 Moderate
Spark plug stuck or broken in cylinder head Low

Step-by-Step Diagnostic Procedure

Swap cylinder 10 ignition coil with another cylinder and clear codes to test
Carefully inspect and remove the spark plug on cylinder 10 -- watch for seized plugs
Measure coil resistance and compare to specification
Check the coil connector for damage, corrosion, or melted plastic
Test PCM coil driver signal at the connector

Frequently Asked Questions

Can I drive with code P0360?

You can drive short distances. On a V10 engine, the misfire will be noticeable but the engine will still function. Repair to prevent catalytic converter damage.

Why are Ford V10 spark plugs notorious?

The 3-valve Ford Triton V10 engines (2005+) use a two-piece spark plug design that is prone to breaking during removal if not serviced at proper intervals. Special extraction tools exist for this common issue.

Should I replace all 10 coils at once?

Not necessarily. If one coil has failed and the others test good, replace only the failed coil along with its spark plug. However, if multiple coils have failed or the vehicle has very high mileage, a full set replacement may be more economical in the long run.