What is P1378 code On 6.0 Powerstroke? (Fix Now)

There are so many trouble codes to determine engine problems of 6.0 Powerstroke. All these codes indicate different engine problems. The P1378 is one of such codes. This code on 6.0 Powerstroke means a specific problem in the vehicle engine.

Today we are going to talk about the code P1378. Our main points will be What is the P1378 code On 6.0 Powerstroke? What are the causes of this code and finally we will learn how to solve this problem?

To know all about this code, you have to read the article till you reach the end of it. So, without making any delay, let’s start.

What is P1378 code On 6.0 Powerstroke

What Does P1378 Code Mean On 6.0 Powerstroke?

Officially the P1378 code on 6.0 Powerstroke means FICM logic circuit. There are so many uses of batteries in our vehicle. From starting the engine to running it smoothly, the battery is important.

There may be a number of problems with your FICM logic circuit. If there is any problem with that then OBD may show the code P1378. The main problem occurs there is low voltage.

So, the trouble code P1378 on 6.0 Powerstroke means any problem with your vehicle battery and its connection. You will know about the cause of this problem in the next section in detail.

Symptoms Of Getting The P1378 Code On A 6.0 Powerstroke

There are so many vivid symptoms of the trouble code P1378 on 6.0 Powerstroke. They are completely observable if you have a good and expert driver. 

But if you want to know about them, I am going to tell you these symptoms for a better understanding.

  • The engine will start late
  • Some misfire will happen
  • Sound will change
  • Engine power will lose
  • More smoke than normal time
  • Engine Light is ON

If you find any of these signs in your vehicle suddenly or gradually then go for a scan immediately. If the scan shows the code P1378 then start your fixing process.

The Causing Factors Of The Error Code P1378

Though the problem is a very big one and has some amount of symptoms but the causes are not so high. There are only 3 or 4 causes behind this code on 6.0 Powerstroke. Let’s see these causes in short.

  • Low Voltage in Battery
  • Faulty FICM 
  • Poor Connection to FICM
  • Battery Charger Problem

All causes for the trouble code P1378 are related to the battery of the engine and FICM. While you face this code, you have to inspect the FICM and Battery area. You also have to work here to solve.

How Serious Is Code P1378 On A 6.0 Powerstroke?

The seriousness of this code will be easy to understand if you read the symptoms of this code on a 6.0 Powerstroke. This will cause your engine starting delay and some misfire may occur in the engine. 

And there are some other serious results of this on your 6.0 Powerstroke. So, you have to handle this code seriously and need to be careful about this. 

Though P1378 is not as serious as the P2262, it is serious enough to take an immediate step. I hope you get the seriousness of this code.

How To Solve P1378 Error Code On 6.0 Powerstroke?

Based on the actual cause of this code on your 6.0 Powerstroke engine, you have to go forward for a solution. To solve this code, at first, you have to inspect and find out the problem. I found some probable solutions for you.

If the problem is in FICM

After inspection, if you find that the problem is in the FICM itself then you have to remove it and start working on it. The circuit inside FICM may be short. If there is any such problem then change the circuit. This will be the perfect solution to the FICM problem.

If the problem is in Connection

Most of the time we find the code P1378 comes for poor connection between the battery and FICM. For this reason, you have to check this part very carefully. The connector jacks may be loose and the wire may be faulty. Check the connection and if you find the problem here then fix it.

If the Problem is in Battery

A faulty battery will not be able to provide the needed voltage to FICM. This may be another reason behind this code. Check the battery voltage with a multimeter. And get the result of the battery voltage level.

Most of the time an aged battery may be too weak to supply the important voltage. If the engine battery is older than a normal battery then change it fast. This is one most used solutions for the trouble code P1378 code on 6.0 Powerstroke.

If the Problem is in Charger

If the charger can not recharge your battery then it will not be able to supply the voltage to the FICM. So, it is important that the charger is ok. Check there and work on this if the charger has any problem.

How Much Does It Cost To Solve The Error Code P1378

The trouble code P1378 code On 6.0 Powerstroke has various reasons. Based on the actual reason the cost depends. If the problem is in the connection then you will be able to fix it without the help of any mechanic. So it will save you 100% money.

But if the problem is in the battery and you need to buy one new then the cost may be from $150 to $350. With this, the mechanic charge of $50 to $70 will be added. The FICM circuit cost may be added if there is a problem with it.

Common Mistakes While Solving The P1378 Code

One most common mistakes that we make in our solving process is taking the code lightly. We don’t think that the code P1378 code On 6.0 Powerstroke may gradually decrease the ability of your engine. So, don’t make any mistakes here.

While we find the signs that appear in the FICM logic circuit problem, we think the temperature may be the reason behind this. We don’t think this is a serious problem and we don’t scan the engine also. This is another mistake.

Additional Comments To Consider Regarding The P1378 Code

The solving of the code P1378 code On 6.0 Powerstroke needs some safety for the mechanic and yourself also if you help him. So wear all safety equipment like hand gloves. You have to secure the engine of your vehicle is off while working on it.

You also need to arrange all the equipment you need. One multimeter, tester, a good plus, and many more will be needed. Keep all these near your hands to make your work fast.


At the end of the P1378 code On 6.0 Powerstroke article, I want to warn you again about your safety. Take this as a serious thing. That was all about What is P1378 code On 6.0 Powerstroke? I tried to make the concept clear to you. I hope you benefited from this article. Thanks for reading.

Similar Posts