AutoCodes - Nissan - P0300 2002 NISSAN ALTIMA SEDAN

P0300 2002 NISSAN ALTIMA SEDAN Code - Cylinder Misfire Detected Random Cylinders

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3
Table of contents

|P0300 2002 NISSAN ALTIMA SEDAN code possible causes

  • Faulty spark plug (s)
  • Faulty ignition coil (s)
  • Clogged or faulty fuel injector (s)
  • Intake air leak
  • Fuel injectors harness is open or shorted
  • Fuel Injectors circuit poor electrical connection
  • Ignition coils harness is open or shorted
  • Ignition coils circuit poor electrical connection
  • Insufficient cylinders compression
  • Incorrect fuel pressure

|How do I fix the P0300 2002 NISSAN ALTIMA SEDAN code?

Check 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.

|P0300 2002 NISSAN ALTIMA SEDAN code tech notes

The P0300 code means that a cylinder(s) is misfiring or is randomly misfiring. Start by checking for intake leaks, intake gaskets are common caused of multi-cylinder misfiring. If no leak are found the next step is to replace the spark plugs. If the problem persists more tests needs to be done to diagnose problem, see "Possible Causes"

|Cost of diagnosing the P0300 2002 NISSAN ALTIMA SEDAN code

Labor: 1.0

The cost of diagnosing the P0300 2002 NISSAN ALTIMA SEDAN 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.

|When is the P0300 2002 NISSAN ALTIMA SEDAN code detected?

The control module monitors the crankshaft speed and has detected a misfire condition

|What are P0300 2002 NISSAN ALTIMA SEDAN code possible symptoms?

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

|P0300 2002 NISSAN ALTIMA SEDAN code description

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.
OBDII Code P0300 2002 Nissan Altima Sedan - Cylinder Misfire Detected Random Cylinders - AutoCodes.com

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|P0300 2002 NISSAN ALTIMA SEDAN code comments

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