What is P0088 Code on 6.4 Powerstroke? (How To Fix)

The P0088 trouble code on 6.4 Powerstroke is a very common code. You will hardly find any 6.4 Powerstroke user who did not face this code in this 1 or 2 years experience with this engine. The code P0088 has some symptoms, causing factors and fixing processes. 

In this article, we will explore the code P0088 on 6.4 Powerstroke. We will try to know what is P0088 code on 6.4 Powerstroke and how to fix this issue. The fixing process will be step by step to make the process easy. So, let’s start with what is the P0088 code on 6.4 Powerstroke?

P0088 Code on 6.4 Powerstroke

What Does P0088 Code Mean On 6.4 Powerstroke?

The trouble code P0088 on 6.4 Powerstroke means the fuel pressure sensor is facing high fuel pressure. The sensor located in the fuel rail measures the fuel ratio of supply and demand. If the fuel pressure is higher than the expected level then this code appears.

Usually, the fuel regulator cannot do its task well then the fuel pressure problem comes. If this problem occurs in your vehicle, you will find the engine is behaving in a different way and some symptoms will appear.

Symptoms Of Getting The P0088 Code On A 6.4 Powerstroke

There are a number of symptoms of the code P0088 on a 6.4 Powerstroke. These symptoms are always common in most cases. But sometimes some engines react differently to this situation. But the common symptoms will help you determine the problem exactly.

Some common symptoms of P0088 code on 6.4 Powerstroke are:

  • Check Engine Light On
  • Vehicle is in Failsafe mode
  • Mileage Reduction
  • Low Power
  • Misfire
  • Acceleration Problem

These are very common symptoms of this code on 6.4 Powerstroke. But there are a number of cases where we find the engine and vehicle showing some different symptoms. The symptoms may be common or uncommon, you have to scan your engine as soon as possible with OBD.

The Causing Factors Of The Error Code P0088

We know the main cause of this code on 6.4 Powerstroke is high fuel pressure. But why does the fuel pressure become high? Certainly, there are some reasons. If you can find these reasons then you will be able to fix the code easily. So let’s see what are the causes of the P0088 code on 6.4 Powerstroke.

The causing factors are:

  • Faulty Fuel Pressure Regulator
  • Faulty Fuel Pressure Sensor
  • Problem in Fuel Supply Line

If you can inspect these issues regularly while maintaining the vehicle then you will be able to avoid this code in the future. In the same way, if you are facing this code right now, you will be able to fix it at home.

How Serious Is Code P0088 On 6.4 Powerstroke?

If you want to know the seriousness of the P0088 code on 6.4 Powerstroke then you have to look at the symptoms of this code. This code is ready to do some short-term and some long-term damages for your vehicle. Most of the symptoms of the codes are very serious for the vehicle.

Though the vehicle automatically starts failsafe mode for its safety, it is still serious enough to damage the vehicle’s power if it lasts for a long time. The engine will lose power permanently if you don’t want to fix this immediately. So, we can say that the code P0088 on 6.4 Powerstroke is a serious code.

How To Solve P0088 Error Code On 6.4 Powerstroke?

The solution process of this code on 6.4 Powerstroke is very easy. The process depends on what the actual causing factor is. We have shown three causing factors in this article.  Depending on what problem your vehicle is facing, you have stepped to the next step. 

To help you, we are suggesting all processes of fixing this code. But before you go to the steps, you have to do an inspection. Take a fuel pressure measuring meter and find what the condition is now. If the meter rating is not natural, you have to inspect for all the possible causes. So, let’s see.

If the Fuel Pressure Regulator

Suppose you find a faulty fuel pressure regulator in the inspection process. If this is the culprit behind this code then you have only one option to fix this problem. That is, you have to replace the faulty fuel pressure regulator with a new one.

This is also a simple process. Just remove the old one by disconnecting the fuel line from the fuel pump. When the removal is done, you have to take a new fuel pressure regulator that the manufacturer recommended and fit it.

If the Fuel Pressure Sensor is Faulty

But if you find the Fuel Pressure Sensor is faulty then you have to work on this part. This sensor is not fixable. You have to replace it if there is any problem with it. The replacement process is very simple. You have to disconnect the sensor from the battery wire. 

Then you have to remove this from the oil rail. The replacement should be done carefully. If you make any mistake here then the code will stay even after replacement.

If the Oil Line is Faulty

Sometimes the Fuel Pressure Sensor and regulator are okay but the line has some problems. The line may be jammed next to the pressure sensor or regulator. If you find the problem is in the oil line in the inspection section then you have to work on this.

Try to clean the oil line by using wire or any other hard but thin things. This will make the oil flow normal. But if the line is broken or knocked then you have to change the old one and buy new line pipes.

How Much Does It Cost To Solve The Error Code P0088

The cost also depends on what is the actual problem your engine is facing. If the problem is in the fuel pressure sensor, the cost will be around $200 to $250. Because a good fuel pressure sensor price is like that.

But if the problem is in the fuel pressure regulator then you have to spend around $300. This is the price of a quality pressure regulator. But the oil line cost is very low. You will find that from $50 to $80. So, this is the cost of solving the P0088 code on 6.4 Powerstroke.

Common Mistakes While Solving The P0088 Code

We find people with this code make a number of mistakes while solving it. Among them, some are very sensitive mistakes. One of such mistakes is not inspecting the problem carefully. 

If you don’t want to spend time on engine scanning and troubleshooting then it will take a long time to solve this problem. We should avoid this habit. Some other mistakes are done by people but they are not so common.

Additional Comments To Consider Regarding The P0088 Code

Almost everything is said except some warning in the solving process and the inspection. First of all, ensure you are safe while working on the oil line or any component of this. Make sure you wire gloves on your hands. Otherwise, you will find yourself in serious situations.

And try to solve the P0088 code as soon as possible. If you let this code stay with your vehicle for a long time then the engine will face some damaging problem and your driving experience will be bad day by day.


That was all about the trouble code P0088 on 6.4 Powerstroke. We hope now you know what this code is and how to fix it. Try to follow all the instructions given here if you are thinking of solving the code at home.

But if you have less confidence and prior experience then you should avoid wasting time. You may meet a mechanic. This will save your time and vehicle. That is the end. Thanks for reading.

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