DTC P20BA Code 6.7 Powerstroke: Fix Reductant Heater A Control Circuit Performance Step By Step

The P20ba code on 6.7 Powerstroke is a tormenting scene for every car owner. The P20ba is a Diagnostic trouble code that indicates a potential problem with the Control Circuit performance. If you own a vehicle, then this is definitely a nightmare for you.

But the good thing is, there is nothing to worry about this. We are here to guide you step by step on how to fix the p20ba code on 6.7 Powerstroke. So, without any further delay, let’s get on to the point.

DTC P20BA Code On 6.7 Powerstroke And How To Fix.jpg

The Meaning of the p20ba Code on 6.7 Powerstroke

Before solving the problem, it is very necessary for you to have clear knowledge about it. By definition, The p20ba code means there is a problem in the control circuit in your Ford 6.7L engine. It is one of the DTC codes (Diagnostic Trouble Code) that can be seen in the 6.7 Engine. In a word, this error code means Reductant Heater “A” Control Circuit Performance. The error code comes up to inform the driver that there is an issue with the DEF tank heater.

This trouble code gets active when an unusual voltage signal has been detected by the PCM (Powertrain Control Module) in the designated reductant heater, symbolizing the letter “A” is out of the range. The error code can also be shown if the reductant heater doesn’t provide performance as required. It would be better for you to talk with a professional or a specific repair database to determine the “A” circuit in the application.

[Note: The exact definition of p20ba may vary depending on the automobile manufacturer: check the repair database or manual for the appropriate explanation of the code]

Reductant Heater and its Importance

The reductant heater is an essential component of an automobile. Its job is to stop the diesel from exhausting or prevent the fluid from crystalizing or freezing due to low temperature. Reductant heater control system is used in the PCM module in order to heat the DEF (Diesel Exhaust Fluid and prevent it from freezing.

Where Is the Reductant Heater Located

When it is cold outside, the diesel exhaust fluid can freeze or crystallize. This can cause problems with the fuel system and engine. The reductant heater helps to prevent this from happening by keeping the diesel exhaust fluid warm. You will find this heater in the reductant injector supply hose(s) or the diesel exhaust fluid filter reservoir.

What Are The Signs of Getting The P20ba Code on a 6.7 Powerstroke

You can get the p20ba error code for various possible causes. You would face some symptoms if the p20ba code shows up; those are listed below-

  • MIL (Malfunction Indicator Lamp) or CEL (Check Engine Light) is turned on
  • Excessive smoke coming out of the exhaust panel
  • Engine power is reduced (DPF regeneration may not occur)
  • Bad driving experience
  • Decreased Mileage per hour
  • Other SCR codes may show up
  • Remote starting will fail

What Are The Reasons Behind The Error Code p20ba?

There is nothing to do against the causing factors of the error code. The older units of 6.7L engines hardly have these issues. We have listed some of the most common reasons why the error code p20ba sets-

  • Defective reductant tank heater A
  • Faulty reductant temperature sensor
  • Poor electrical connection in the heater circuit, such as wiring issues
  • Failed DEF supply line heater
  • SCR/GPCM (Grow Plug Control Module) failure
  • Defective PCM (Rare Scenario)

Is The Error Code P20ba On The 6.7 Powerstroke Very Serious?

If you ask us, we would say this DTC code is severe, and the symptoms your vehicle would show are tough to unsee. As a matter of fact, the p20ba error code can be very threatening for your vehicle and possibly be the worst DTC code for you to get.

But as we said earlier, every problem has a solution, and there is nothing to worry about this. Keep reading this article to know how to troubleshoot the error code. One thing to keep in mind, if you neglect this issue, it will lead to permanent engine damage resulting in – Low Mileage per gallon and so on.

Fixing The P20ba Error Code On 6.7l Powerstroke

It is an issue with the DEF tank, and it is covered under the five years/50000-mile warranty for vehicles over 8500 GVW. In order to solve the error code, we would recommend you to get some tools first, such as a 5.5 to 15mmm Socket, extension and Ratchet, flashlight, gloves, and safety gadgets. 

You can troubleshoot the code in two ways. Let’s take a look into them

Replacing The Diesel Exhaust Fluid Tank

First of all, go to the driver-side driveshaft to remove the 13mm bolts from the front part of the skid plate. Next, remove the other two 13mm bolts from the vehicle’s backside. You will find them on the rear side of the vehicle.

After this, go to the driver-side skid plate and take out the 5 fasteners on the rail side. Don’t forget to remove the other skid plate bolts also. Now, open the fuel door to remove the three 5 ½ mm screws.

Next, remove the DEF pillar neck and put the cap back. It is for safety issues; if you don’t you may get unwanted accidents caused by spills. Detach all the injector hoses and connectors from the DTF tank and unscrew the 13mm bolts from the DTF tank, and you just took the DTF tank out of your vehicle.

Now, get a new DTF tank, replace it with the old one, and install it properly.

Deleting The Def Emission System

Before going through this system, check if the local government has any emission control rules for 6.7L engines. We are highly against any task that is a violation of the law. If everything is fine, modify the DEF system and remove the signal light. We would suggest you take help from professionals for this task.

Don’t forget to search if there are any technical service bulletins for your particular vehicle. If there is any update on solving the p20ba issue, this will save you time and cash.

How To Avoid The P20ba Error Code

You can’t exactly avoid the p20ba code. All you can do is fix the issue if you see the code. Just follow our guidelines to solve the problem related to the p20ba error code, and your vehicle will be fine. But neglecting the problem might be very dangerous for your Ford 6.7L engine.

Common Mistakes While Fixing The P20ba Code

  • Not following the safety regulation before troubleshooting
  • Not getting the necessary equipment while performing the task
  • Violating the rules related to the emission control system.

Things To Know Regarding The P20ba Code

If you want to diagnose and solve the issue, narrow down the causes from a list of possible causes. This error code is prevalent among the Ford GMC vehicles. If you face such a problem, you can change the DEF tank, or you can delete the whole emission system.

If the p20ba code returns after this, test the heater and anything associated with it like the circuits. You can also replace the DEF reductant heater with a new one. The cost of the heater will depend on the specific config and year of the Ford F-250. We can assume you might need to pay around $450-$600 for a brand new DEF heater.

Final Words

That is all from us on the DTC p20ba error code. We hope the article was helpful to you, and now you can fix the error on your own. But if you are not confident with the task, we will advise you to go to any automobile service shop and get their assistance.

Last Updated on May 18, 2022 by Rifen

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