P0302 Kia Sportage
Cylinder 2 Misfire Detected · Powertrain Code · High · Repair: Easy
What is P0302?
Misfire detected in cylinder 2. Typically caused by a worn spark plug, bad ignition coil, faulty fuel injector, or low compression in that cylinder.
When the Kia Sportage triggers code P0302 (cylinder 2 misfire detected), it typically points to an issue in the powertrain system. This is a high severity code, so address it promptly to avoid further damage or safety concerns. Below you'll find the most common causes, symptoms, and repair options specific to the Kia Sportage.
This repair is rated easy, meaning basic tools, no lift needed.
Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your Kia Sportage.
Common Causes on Kia Sportage
- Worn or fouled spark plug on cylinder 2
- Failed ignition coil on cylinder 2 (common on Theta II engines)
- Carbon buildup on intake valve for cylinder 2 (GDI engines)
- Low compression on cylinder 2 from Theta II rod bearing wear
Symptoms
- Check Engine Light flashing (if severe)
- Rough idle with vibration
- Loss of power under load
- Unburned fuel smell from exhaust
- Engine shaking at idle
Notes for Kia Sportage
On Theta II engines with rod knock TSBs, always perform a compression test before assuming a simple ignition issue.