p0301
Easy Fix
Ford · Trucks
Cylinder 1 Misfire Detected
Quick Answer
Error code P0301 on your Ford Trucks means: Cylinder 1 Misfire Detected. This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
  1. Worn or fouled spark plug in cylinder 1
  2. Failing ignition coil pack on cylinder 1
  3. Damaged or leaking fuel injector on cylinder 1
  4. Low compression in cylinder 1 due to valve or piston ring wear
  5. Vacuum leak near cylinder 1 intake runner
How to Fix It
1
Remove and inspect spark plug on cylinder 1
2
Swap ignition coil from cylinder 1 to another cylinder and recheck for misfire migration
3
Test fuel injector on cylinder 1 with a noid light or swap with another cylinder
4
Perform a compression test on cylinder 1
Pro Tip
This is a common issue that most users can resolve without specialized tools. Try the first step before moving on to more complex solutions.
Parts You May Need
Spark plug
Ignition coil pack
Fuel injector
Related Error Codes
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