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P0304 2016 Chevrolet Silverado Code - Cylinder 4 Misfire Detected

Quick Answer

When the diagnostic code P0304 appears on a 2016 Chevrolet Silverado, it indicates that a misfire has been detected in cylinder 4 of the engine. Common causes include Faulty spark plugs or ignition coils, Clogged fuel injectors or fuel filter, Vacuum leaks in the intake manifold or air intake system. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0304 2016 Chevrolet Silverado indicates Cylinder 4 Misfire Detected.
Common causes
Common causes include Faulty spark plugs or ignition coils, Clogged fuel injectors or fuel filter, Vacuum leaks in the intake manifold or air intake system.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 06, 2024
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Code P0304 2016 Chevrolet Silverado Description

When the diagnostic code P0304 appears on a 2016 Chevrolet Silverado, it indicates that a misfire has been detected in cylinder 4 of the engine. A misfire occurs when the fuel-air mixture in the cylinder fails to ignite properly, leading to a disruption in the combustion process. This can result in a lack of power, rough idling, poor fuel efficiency, and increased emissions.

OBDII Code P0304 2016 Chevrolet Silverado - Cylinder 4 Misfire Detected
P0304 2016 Chevrolet Silverado Code - Cylinder 4 Misfire Detected

Common Causes of P0304 2016 Chevrolet Silverado

  1. Faulty spark plugs or ignition coils
  2. Clogged fuel injectors or fuel filter
  3. Vacuum leaks in the intake manifold or air intake system
  4. Low compression in cylinder 4
  5. Engine overheating or coolant leaks causing a head gasket failure

Symptoms of P0304 2016 Chevrolet Silverado

  1. Rough idling or vibrations felt throughout the vehicle
  2. Loss of power or hesitation during acceleration
  3. Engine misfires or stalling
  4. Increased fuel consumption
  5. Illumination of the check engine light

How to Fix P0304 2016 Chevrolet Silverado

  1. Diagnose the specific cause of the misfire by performing a cylinder compression test, inspecting spark plugs and ignition coils, and checking fuel injectors.
  2. Replace any faulty spark plugs, ignition coils, or fuel injectors in cylinder 4.
  3. Repair any vacuum leaks in the intake manifold or air intake system.
  4. Address any engine mechanical issues such as low compression or head gasket leaks.
  5. Clear the diagnostic trouble codes, reset the engine control module, and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0304 2016 Chevrolet Silverado

The typical repair costs for resolving a cylinder 4 misfire on a 2016 Chevrolet Silverado can range from $100 to $500, depending on the specific cause of the misfire and the cost of parts and labor. This estimate includes the cost of diagnostic testing, replacement parts, and labor for the repair. It's important to note that actual repair costs can vary based on the location of the repair shop, the make and model of the vehicle, and the complexity of the repair. It's recommended to obtain a detailed quote from a qualified mechanic or auto repair shop before proceeding with the repair.

What does this mean?

Tech Notes for P0304 2016 Chevrolet Silverado

The P0304 code means that 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".

There is a Factory Service Bulletins for All 2000-2020 Chevrolet Models:
2000-2020 Chevrolet Factory Service Bulletin OBDII Code P0304
This Factory Service Bulletin explains how this condition may be caused by significant carbon build-up on the intake and/or exhaust valves due to fuel contamination or incomplete burning of the fuel.

Need more information about the P0304 2016 Chevrolet Silverado code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0304 2016 Chevrolet Silverado Code

1. What does the OBDII code P0304 mean on a 2016 Chevrolet Silverado?

P0304 indicates that the engine control module (ECM) has detected a misfire in cylinder 4.

2. What are the common symptoms of a P0304 code on a 2016 Chevrolet Silverado?

Symptoms include a rough idle, reduced engine performance, poor fuel economy, hesitation during acceleration, and the check engine light turning on.

3. What causes a cylinder 4 misfire on a 2016 Chevrolet Silverado?

Common causes include a faulty spark plug, a bad ignition coil, a clogged fuel injector, low cylinder compression, or vacuum leaks near cylinder 4.

4. Can I drive my 2016 Chevrolet Silverado with a P0304 code?

Driving with a P0304 code is not recommended, as it can lead to further engine damage and reduced performance. Address the issue promptly.

5. How do I diagnose a P0304 code on my 2016 Chevrolet Silverado?

Start by inspecting the spark plug, ignition coil, and fuel injector for cylinder 4. Check for vacuum leaks, test compression, and scan for related trouble codes.

6. How do I fix a P0304 code on a 2016 Chevrolet Silverado?

Repairs may include replacing the spark plug, ignition coil, or fuel injector for cylinder 4, fixing vacuum leaks, or addressing low compression issues.

7. Can a dirty air filter cause a P0304 code on a 2016 Chevrolet Silverado?

While not a direct cause, a dirty air filter can contribute to poor engine performance, which might exacerbate misfire issues.

8. How much does it cost to fix a P0304 code on a 2016 Chevrolet Silverado?

Repair costs vary but typically range from $100 to $300 for parts and labor, depending on whether you need to replace the spark plug, ignition coil, or fuel injector.

9. Will a P0304 code damage the catalytic converter on a 2016 Chevrolet Silverado?

Yes, prolonged misfires can lead to unburned fuel entering the exhaust system, potentially damaging the catalytic converter over time.

10. Can low fuel pressure cause a P0304 code on a 2016 Chevrolet Silverado?

Yes, low fuel pressure can result in inadequate fuel delivery to cylinder 4, contributing to a misfire.

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