P0302 Ford Ranger
Cylinder 2 Misfire Detected · Powertrain Code · High · Repair: Moderate
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 Ford Ranger 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 Ford Ranger.
This repair is rated moderate, meaning some experience and specialty tools required.
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 Ford Ranger.
Common Causes on Ford Ranger
- Failed ignition coil on cylinder 2 — Ford coil-on-plug units are a common wear item
- Fouled or worn spark plug on cylinder 2
- Carbon buildup on intake valves (direct injection EcoBoost engines)
- Leaking fuel injector on cylinder 2
Symptoms
- Check engine light (flashing if severe)
- Rough idle with noticeable vibration
- Loss of power
- Exhaust popping or backfire
- Fuel smell from unburned fuel
Notes for Ford Ranger
Swap the coil from cylinder 2 with another cylinder — if the misfire follows the coil, replace it; if it stays on cylinder 2, check the spark plug or injector.