P0361 — Ignition Coil J Primary/Secondary Circuit Malfunction
Drivable short-term, but fix now to avoid damage.
What P0361 means
This code means the engine computer detected an electrical fault in the circuit for ignition coil J, the coil responsible for sparking one of the cylinders. It typically results from a failing coil, broken or shorted wiring, or a bad connector. It's a common code and is usually resolved by replacing the faulty coil and repairing any related wiring problems.
Common symptoms
- Check engine light is on or flashing
- Rough or unstable idle
- Hesitation or reduced power when accelerating
- Noticeable engine misfire
- Increased fuel consumption
Common causes
- Failed or weak ignition coil
- Damaged or corroded coil connector
- Shorted or broken wiring in the coil circuit
- Worn or fouled spark plug
- Faulty engine control module (uncommon)
Typical repair cost
$100 – $350
Varies by vehicle and root cause.
Frequently asked questions
Can I keep driving with a P0361 code?
Usually for short distances, but don't depend on it. A misfiring cylinder can overheat and damage your catalytic converter, which costs a lot more than a coil. If the engine shakes hard or the light is flashing, stop and get the car towed.
How much does it cost to fix a P0361 code?
Most repairs fall between $100 and $350. A single ignition coil is inexpensive and labor is generally fast. The total can climb if wiring or connectors are damaged or if multiple coils are replaced at the same time.
Is a P0361 code serious?
Yes, it deserves prompt attention. One misfiring cylinder won't leave you stranded right away, but ignoring it can harm emissions components and worsen engine performance. Treat it as a repair to make soon.
Why does only one coil fail?
Ignition coils each work independently, so one can wear out or short while the others stay fine. Heat, age, and oil or moisture intrusion often cause a single coil like J to fail before the rest of the set.