Engine-Codes - Nissan - P0301 2009 NISSAN SENTRA

P0301 2009 NISSAN SENTRA Code - Number 1 Cylinder Misfire Detected

- Code Popularity: 5,320 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the P0301 2009 NISSAN SENTRA Code?

  • Faulty spark plug 1
  • Clogged or faulty fuel injector 1
  • Faulty ignition coil 1
  • Fuel injector 1 harness is open or shorted
  • Fuel injector 1 circuit poor electrical connection
  • Ignition coil 1 harness is open or shorted
  • Ignition coil 1 circuit poor electrical connection
  • Insufficient cylinder 1 compression
  • Incorrect fuel pressure
  • Intake air leak

|How to Fix the P0301 2009 NISSAN SENTRA Code?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|P0301 2009 NISSAN SENTRA code tech notes

The P0301 code means that cylinder #1 is misfiring or is randomly misfiring. Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder #1. If the problem persists more tests need to be done to diagnose the problem. See "Possible Causes" for the most common problems.

|What is the cost to diagnose the P0301 2009 NISSAN SENTRA code?

Labor: 1.0

The cost to diagnose the P0301 2009 NISSAN SENTRA code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are P0301 2009 NISSAN SENTRA code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Lack/loss of power
  • Hard start
  • Engine hesitation

|What Does the P0301 2009 NISSAN SENTRA Code Mean?

When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the Crankshaft Position (CKP) sensor signal to vary, the Engine Control Module (ECM) can determine that a misfire is occurring. The Diagnostic Trouble Code (DTC) will be set when the Engine Control Module monitors the crankshaft speed and has detected that engine cylinder #1 is misfiring.

Number 1 Cylinder Misfire Detected

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