P0362 Code: Ignition Coil L Primary Circuit Malfunction
🟠 Moderate severity · drivable
Drivable, but that cylinder will misfire. Stop and get a tow if the check engine light is flashing.
What P0362 means
There's an electrical fault in the primary circuit of ignition coil L. On many engines, coil L feeds cylinder 12. That cylinder won't get proper spark, so it will misfire.
Symptoms
- Check engine light on (may flash)
- Misfire from cylinder 12
- Rough idle
- Loss of power
- Poor fuel economy
Common causes
- most common: Faulty ignition coil
- common: Damaged wiring or loose connector at the coil
- less common: Failed ignition driver in the engine computer
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Replace ignition coil L | Yes | $50–200 |
| Repair damaged coil wiring | Mechanic | $50–150 |
| Swap coil L with another cylinder's coil to confirm the fault | Yes | $0–20 |
Frequently asked questions
Can I drive with a P0362 code?
Yes if the light is steady, but the engine will misfire. Stop and get a tow if the light is flashing.
What is the most common cause of P0362?
A faulty ignition coil L, which feeds cylinder 12 on many engines.
How much does it cost to fix a P0362?
Typically $50–$200 for a new ignition coil.
Related codes
P0312
P0312 Code: Cylinder 12 Misfire Detected
P0361P0361 Code: Ignition Coil K Primary Circuit Malfunction
P0350P0350 Code: Ignition Coil Primary/Secondary Circuit Malfunction
Updated 2026-08. This page is informational and not a substitute for professional diagnosis.