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p0301
Easy Fix
Acura · Sedans
Cylinder 1 Misfire Detected
Quick Answer
Error code P0301 on your Acura Sedans means: Cylinder 1 Misfire Detected. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
DE3/DE4DC5/DN2DN2NC1KC1UA6CU2
Likely Causes
  1. Faulty spark plug in cylinder 1
  2. Defective ignition coil pack
  3. Fuel injector malfunction
  4. Low compression in cylinder 1
  5. Vacuum leak affecting cylinder 1
How to Fix It
1
Remove cylinder 1 spark plug and inspect
2
Replace spark plug if worn or fouled
3
Test ignition coil for cylinder 1
4
Check fuel injector pulse signal
5
Perform 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
Related Error Codes
P0171P0300P0420P0325P0341
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