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P2263 Code on 6.4 Powerstroke: Meaning & How To Fix It

Unfortunately, the P2263 code represents a pretty serious error on your 6.4 Powerstroke. It isn’t something that can be put off for a much later time. If you see this error on your vehicle, you should stop driving immediately and work on fixing it. 

The P2263 code represents a turbocharger or supercharger error. The errors are likely caused by a faulty exhaust back pressure sensor or injection control pressure sensor. The code can be dealt with through a complete EBP/ICP sensor replacement. 

This article will discuss this error in detail. It will show you the mechanisms that allowed the engine to produce an error and give you step-by-step instructions on how to best deal with it. 

The Turbocharger Relies on Exhaust Gases

As you may know, car manufacturers try to design cars to be as efficient as possible nowadays. Part of this is to ensure that all energy sources are maximized. These include the fuel supply, the water supply, and even the air supply.

Within cars are volumes and volumes of gases. Mechanical components such as vacuums and pistons supply air into the engine. The air goes into the car’s cylinders, but these cylinders have limited volume capacity. 

Turbochargers are there to suck in exhaust gases that produce compressed air through a compressor. The compressed air is then fed into combustion chambers which fuel the engine when it needs extra fuel (such as boosting or increasing speed). 

Through the turbocharger, the air is maximized, and the engine operates efficiently. 

The EBP Sensor Detects Irregular Pressure

One of the reasons why the code shows up is the exhaust back pressure sensor (EBP) being faulty and unable to properly detech the amount of pressure. 

Usually, the EBP monitors the current pressure in the exhaust chambers, which it reports to the powertrain control module (PCM), which acts as the engine’s brain. The PCM notes the EBP’s report and boosts the turbocharger to increase or decrease exhaust gas pressure, according to EBP reports. 

Do note that the error isn’t immediately indicative of a faulty EBP. Sometimes, it could actually be the tubes going to the EBP and not the sensor itself, which may be blocked by soot. 

When your vehicle consumes way more fuel per mile or kilometer than it used to, it may be a sign of a faulty EBP. The sensor may not be properly communicating the boosts and the corresponding fuel requirements per boost.

1. Locate the EBP Sensor

You can find the EBP sensors near the driver-side valve cover. You know that it is the sensor when it is near the exhaust back pressure tube. You would often see in these parts a buildup of carbon.

This buildup occurs when the combustion process isn’t completed. Try not to ignore this, as this may be the culprit causing problems on your sensors. 

Both the tube and the possible buildup will be easy to spot. Parallel to the tube is a ribbed hose connected to a wire. The end of this wire is the EBP sensor.

2. Detach The Hose And The Sensor Tube

Carbon would also often get into the hose near the sensor. So the very first thing to do is to detach the hose from the sensor’s top. Then, unplug the connectors from the top of the sensor tube. For extra precaution, you may choose to turn off the battery. 

Using a 10-mm (0.39 in) bolt extractor, remove the bolt that attaches the tube to the manifold. You have now detached the top and middle parts of the sensor tube. The next thing to do is to take out all the bolts that hold the fender wheel in place. 

The sensor tube is positioned in a way where it would be nearly impossible for you to take it out from the top of the vehicle. A good angle would be from under the vehicle. Take note of the sensor tube’s location and use it as reference when you go under. 

Use a wrench to unscrew the bottom part. By now, the sensor tube should be dangling. Take out the entire tube from the top. 

Examine to see if soot has filled up the tubes. Clean the tube using a thin rod and some towels and re-attach it to the engine. Power up the vehicle and monitor for performance issues. You should be good to go if the codes do not show up anymore. 

3. Attach the Replacement Sensor Tube

This may have been the reason for the sensor’s faulty performance. Take out your replacement sensors and position them beside the old ones. They should be similar in length and shape. 

Near the sensor are loose bolts, which you will have to tighten before you install. 

Examine the hole left by the tube to see if there’s gunk. If there is, clear the gunk using a towel. 

Begin attaching the replacement sensor at the bottom. Ensure that it is screwed tight. Then re-screw the sensor’s attachment to the manifold. Then, re-plug the sensor into the wires you detached earlier. 

Re-attach the bolts in the fender wheel and the hose you’ve taken out. 

Check if the error code still shows up and if the engine has performance problems. 

The ICP Sensor Monitors Injector Pressure

As you may know, many parts of the engine rely on fuel to operate. The ICP sensor’s job is to monitor the fuel that passes through the injectors to ensure they are appropriate to the vehicle’s driving conditions. 

If you want to speed up, the fuel delivered has to be high-pressure, and it’s the opposite when you want to slow down. 

However, the ICP gets contaminated with oil from time to time, which most definitely affects its performance. Signs of a failed ICP sensor include stalling, jerking, engine misfires, or when the crank is working, but the car doesn’t start. 

This affects the turbocharger because the component that compresses the air requires a precise amount of fuel. If the compression rate isn’t appropriate, the exhaust gas delivered also becomes inappropriate since the amount of gas that enters the turbocharger depends on how well the compressed air corresponds to the requirements set by the PCM. 

Unfortunately, dealing with a faulty ICP would often entail a complete replacement. 

Here is a step-by-step guide on how to replace a faulty ICP sensor:

1. Check if the Wires and Tubes Have Oil

A factor that may be affecting turbocharger compressor performance is the inability of fuel to reach the turbocharger’s components. The first thing you can do is to check whether oil can freely flow along the tubes near the sensors. 

If you see that it’s blocked, use metal rods to decongest the pipeline and some towels. 

Try to examine the wires as well. The sensor may be unable to communicate its reports to the PCM due to the oil. 

Additionally, look for some short-circuited wires by plugging in multimeter prongs to the wires. It should match the 5-voltage requirement of the sensor.

2. Prepare for Sensor Replacement

You will be working with wires for this replacement so disconnect the vehicle from all power. Clean the threads if you can to make access to the components easier. Most Powerstrokes have gold-colored sensors, which makes them easy to see. 

It is connected to the rest of the system via wires. Begin by unplugging the top of the sensor. Check to see if there’s oil. Clean with a towel if there is. 

3. Check the Sensor’s Base

Using a wrench (⅝ wrench is ideal), loosen the o-ring that keeps the sensor in place. Take out the sensor and check if the base has oil. If there’s none, it could have been the o-ring causing the problem. Tighten the o-ring. If there is, clean the area where the sensor’s base used to be. 

Re-tighten using a wrench and take the vehicle out for a spin. If the problems persist, proceed to step 4. 

4. Attach the Replacement Sensor

Once you have cleaned the area and made sure there’s no more oil, remove the replacement sensor. Attach it to the base and tighten it with an o-ring. A wrench would work best, but you can actually attach this using your hands. 

Soak up the oil near the sensor’s wires using a towel. Reconnect the connector to the sensor and power up the computer to see if the error code still appears. With the new sensor, your problems should be fixed.

As an extra precaution, I would advise you to get two replacements whenever you’re ordering online. ICP sensors tend to be fragile and may end up faltering in the middle of a ride.

Avoid such crises by keeping an extra one handy. Also, have a toolbox at the back of your car cause you just never know!


The P2263 Code on the Powerstroke is due to a turbocharger issue. However, the turbo’s performance is heavily affected by other components, such as the EBP and ICP sensors, which often tend to be faulty.

When these are broken, they also often need complete replacement. Do your car service by keeping this article with you during repairs. Your vehicle will be operating smoothly again in no time!