AutoCodes - Lincoln - P0304 LINCOLN

P0304 LINCOLN Code - Cylinder 4 Misfire Detected

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

|P0304 LINCOLN code possible causes

  • Faulty spark plug 4
  • Clogged or faulty fuel injector 4
  • Faulty ignition coil 4
  • Fuel injector 4 harness is open or shorted
  • Fuel injector 4 circuit poor electrical connection
  • Ignition coil 4 harness is open or shorted
  • Ignition coil 4 circuit poor electrical connection
  • Insufficient cylinder 4 compression
  • Incorrect fuel pressure
  • Intake air leak

|How do I fix the P0304 LINCOLN 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.

|P0304 LINCOLN code tech notes

The P0304 code means that the cylinder 4 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 4. If the problem persists more tests need to be done to diagnose the problem, see "Possible Causes".





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|Cost of diagnosing the P0304 LINCOLN code

Labor: 1.0

The cost of diagnosing the P0304 LINCOLN 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 P0304 LINCOLN code detected?

Engine Cylinder 4 is Misfiring.

|What are P0304 LINCOLN code possible symptoms?

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

|P0304 LINCOLN 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 P0304 Lincoln - Cylinder 4 Misfire Detected - AutoCodes.com

|Need more information with the P0304 LINCOLN code?

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|P0304 LINCOLN code comments

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