Updated at: 01-09-2022 - By: Lucas

Ford F150 P0305 is one of the most often occurring codes on the car. Detecting an issue with your car’s cylinder 5 can create a variety of issues. Any Ford F150 owner who gets the P0305 error code has to pay attention.

Cylinder misfire is indicated by the P0305 error code. This indicates that the cylinder in issue is malfunctioning. P0305 is a code that corresponds to the fifth cylinder. The computer has identified a misfire in cylinder five when this code is thrown.

The Ford F150

The Ford F150 is one of the most popular vehicles on the road, and it is a highly popular truck. One of the most dependable trucks on the market, too.

Towing capacity and payload, off-road prowess, and a pleasant interior are just some of the attributes that have made it a household name in the industry.

It’s no surprise that this truck has become so popular. However, even the best trucks have their share of issues, and the Ford F150 is no exception.

You may learn a lot about your truck from trouble codes. A fault code on your Ford F150 should be taken seriously and addressed as soon as possible if you notice it. Ignoring a fault code can lead to more serious issues in the future.

Causes of Cylinder 5 Misfire

P0305 Ford F150.

Cylinder five misfires can be caused by a variety of factors. Spark plug problems are the most typical cause. A misfire can be caused by a fouled or broken spark plug. Spark plugs wear out over time, causing this problem.

As a result, following the manufacturer’s recommendations for checking and replacing spark plugs on a regular basis is critical.

Misfires in cylinder five might also be caused by a malfunction in the fuel injector. A misfire might be caused by an injector that is blocked or broken. Over time, the injector becomes clogged with debris.

A misfire might also be caused by an issue with the fuel pressure. In order to successfully burn the gasoline, it is necessary to have it inflated to the proper pressure.

A misfire might also be caused by an issue with the ignition coil. The cylinders’ air/fuel mixture is ignited by the spark produced by the ignition coil. A misfire might occur if the ignition coil is faulty.

Another possibility for a misfire is a vacuum leak. A misfire can be caused by an imbalance in the air/fuel combination caused by a vacuum leak. An issue with the air intake system may also be to blame for such an imbalance.

Similarly, engine damage can cause a misfire. Damage to the valves or pistons is the most common cause of this problem. Misfire can occur if the air/fuel mixture is out of whack, causing an imbalance.

Last but not least, a misfire might be brought on by a lack of compression in the fuel. As a result, the air/fuel mixture may not burn as efficiently as it could if the compression is too low. The engine’s compression needs to be checked frequently.

Symptoms of P0305 Code on the Ford F150

P0305 Ford F150

For example, you may see that your Ford F150 has a P0305 code, which can cause a variety of issues. The most typical symptom is an illuminated dashboard check engine light. As a result, the computer is trying to notify the driver of an issue it has found.

A decrease in the vehicle’s fuel efficiency is a huge warning flag that something is wrong. It is impossible for the engine to run as efficiently as it should when it is misfiring. Because of this, the vehicle will consume more fuel than normal.

A decrease in power is another sign of a P0305 code on a Ford F150. A lack of cylinder pressure is to blame for this. Therefore, the vehicle will not be able to perform at its full potential.

Finally, you may have noticed that the engine is making a strange noise. Because of the misfire, the engine is vibrating and shaking. Especially at low speeds, the vibrations can be rather strong.

If you see any of these signs, you should get your car checked out by a professional right away. Continuing to ignore the issue will only exacerbate it and increase the risk of serious engine damage.

Fixing Cylinder 5 Misfire

Finding out what’s causing a misfire is the best method to remedy it. P0305 codes are typically caused by an issue with the spark plug. It’s best to start by checking the spark plug. Replace it if it appears clogged or damaged.

Taking the fuel injector out and soaking it in a cleaning solution overnight is the best approach to fix the problem. The next day, use compressed air to remove any dirt or debris that may have accumulated in the injector.

An ohmmeter is the greatest tool for determining if the ignition coil is the problem. In order to get an accurate reading, place the leads of an ohmmeter directly on the coil’s terminals. The ignition coil should be replaced if the reading is out of spec.

Other Trouble Codes that May Accompany P0305 on a Ford F150

The P0305 may be accompanied by other codes on your Ford F150. The following are the codes:

If the P0305 code is displayed, it is simply one of many codes that can indicate a misfire. If you notice any of these codes in your vehicle, you should get it checked out right away.

When an engine misfire is ignored, it can lead to major damage. Combustion is essential to the engine’s operation. It is possible for pre-ignition to occur if a cylinder is misfiring.

Pre-ignition occurs when the air/fuel mixture begins to ignite before it should have. Because it places undue strain on the engine’s components, this can lead to catastrophic failure.

Frequently Asked Questions

Can you drive with a cylinder 5 misfire?

A cylinder misfire should not be ignored when driving. This is due to the fact that it might cause catastrophic engine damage. If you must go behind the wheel, do it at a maximum speed of 45 mph and do not tow any more equipment.

How much does it cost to fix a P0305 code?

To fix a P0305 error, the cost of doing so varies based on the cause. In most cases, it’s just a matter of replacing the spark plug that has to be replaced. But if the ignition coil or fuel injector is faulty, the repair will cost more.

How do you fix a cylinder misfire?

Determine the cause of the misfire before you can remedy it. P0305 codes are typically caused by an issue with the spark plug. It’s best to start by checking the spark plug.

Replace it if it appears clogged or damaged.


Cylinder #05 appears to be misfiring, as indicated by the P0305 code. It’s critical to get this corrected as quickly as possible, as it might cause a variety of issues. The spark plug is the most typical cause of a P0305 code.

Fuel injector or ignition coil malfunctions may also be to blame. If you’ve found this information helpful, please let us know. Please don’t hesitate to contact us if you have any more questions or issues.