P0362 — Ignition Coil K Primary/Secondary Circuit Malfunction
Drivable short-term, but fix now to avoid damage.
What P0362 means
This code means the engine computer detected an electrical problem in the circuit for ignition coil K, which fires the spark plug on one cylinder. The common causes are a worn-out coil, damaged or shorted wiring, or a faulty connector. It's a common code and is normally fixed by replacing the bad coil and repairing any damaged wiring or connections.
Common symptoms
- Check engine light is on or flashing
- Rough idle or engine shaking
- Loss of power or hesitation when accelerating
- Engine misfire or stumble
- Lower fuel economy
Common causes
- Failed or weak ignition coil
- Damaged or corroded coil connector
- Broken or shorted wiring in the coil circuit
- Worn or fouled spark plug
- Faulty engine control module (rare)
Typical repair cost
$100 – $350
Varies by vehicle and root cause.
Frequently asked questions
Can I keep driving with a P0362 code?
Short distances are usually okay, but you shouldn't rely on it. A misfiring cylinder can overheat and damage your catalytic converter, which is expensive to replace. If the car shakes badly or the light flashes, stop driving and have it towed.
How much does it cost to fix a P0362 code?
Typical repairs run from $100 to $350. The ignition coil is fairly cheap and quick to install. Costs increase if connectors or wiring need work or if several coils are replaced together for reliability.
Is a P0362 code serious?
It should be addressed soon. A single misfire won't strand you immediately, but ignoring it risks catalytic converter damage and rough running. Don't let it linger longer than necessary.
Could bad spark plugs cause a P0362 code?
Yes. A fouled or worn spark plug can put extra strain on coil K and trigger this code, so technicians often inspect the plug along with the coil. Replacing both together is common to ensure the misfire is fully resolved.