P20b9 Code 6.7 Powerstroke

The Ford 6.7L engines have been designed to efficiently identify and inform users of irregularities using Diagnostic Trouble Codes (DTCs). Among these codes, the P20B9 code 6.7 powerstroke indicates a potential issue with the engine. For those unfamiliar with this code, this article provides detailed insights into its possible solutions, symptoms, and underlying causes. By thoroughly examining all aspects of DTC P20B9, readers can gain a comprehensive understanding and effectively address any issues that may arise.

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What Does P20B9 Code 6.7 Powerstroke Mean?

PD209 is one of the diagnostic trouble codes assigned to a certain type of Ford engine, specifically the 6.7L model. This code, known as Reductant Heater A Control Circuit/Open, indicates an issue with the control circuit that regulates the function of reductant heater A within the vehicle.

The PCM (Powertrain Control Module) is responsible for monitoring and detecting any abnormalities in voltage related to this component, resulting in P20B9 code 6.7 Powerstroke storage. One may question why this particular error code includes the letter “A.” To correctly identify and manage each of its onboard reductant heaters, crucial in preventing DEF (Diesel Exhaust Fluid) from freezing up, they have been designated as Reductant Heaters A/B/C, respectively.

However, when no voltage is supplied to heater A, and it fails to produce the heat necessary for the proper functioning of the DEF tank, this results in error code P20B0 being triggered.

Symptoms Of Getting The P20B9 Code 6.7 Powerstroke

Symptoms Of Getting The P20B9 Code 6.7 Powerstroke
Symptoms Of Getting The P20B9 Code 6.7 Powerstroke

One may observe certain recognizable indicators when dealing with the P20B9 malfunction in Ford’s 6.7L engine, similar to other DTCs. The presence of symptoms such as those outlined below can signify the occurrence of a P20B9 error code.

  1. Check Engine Light (CEL) is Active
  2. Excessive Black Smoke From Exhaust Panel
  3. Poor Fuel Economy or Mileage Per Gallon (MPG)
  4. Sluggish Driving Experience
  5. Other Selective Catalytic Reduction-Related Codes 

One can obtain the DTC by experiencing three or more symptoms.

The Causing Factors Of The Error Code P20B9

The code indicates a malfunction in heater A, revealing that the issue stems from this component. It can be inferred that any contributing factors to this error code will pertain to the functionality of heater A.

  • Faulty Reductant Tank Heater A
  • Open or Shorted Harness Of Reductant Heater
  • Poor Electrical Connection Related To The Heater
  • Shorted or Failed DEF Supply Line
  • Damaged PCM/SCR (Rare Case)

One may find that the factors above can trigger the DTC P20B9 code and significantly impact their driving performance.

How Seriousness Is Code P20B9 On 6.7L Powerstroke?

The severity of this code is directly affected by the prevailing weather conditions. For individuals residing in warmer regions, encountering this code may not elicit as much concern as those living in colder climates. It is crucial to address and resolve this issue promptly if one resides in an area with low temperatures.

The freezing of DEF (Diesel Exhaust Fluid) can cause significant damage to the DEF tank, which could have serious consequences. Therefore, taking immediate action and rectifying this code immediately is imperative to avoid potential harm or injury.

How To Solve P20B9 Error Code On 6.7L Powerstroke?

How To Solve P20B9 Error Code On 6.7L Powerstroke?
How To Solve P20B9 Error Code On 6.7L Powerstroke?

The reductant heater A can resolve this code. However, alternative methods for determining it are also present.

Before initiating the repair procedure, ensuring that all necessary equipment is readily available is imperative. Essential items for this operation include:

  1. Safety Goggles, Gloves & Flashlight
  2. Scanner & DVOM (Digital Volt/Ohm Meter)
  3. Correct Sized Socket, Ratchet & Extensions

Prepared with all necessary equipment, the troubleshooting methods can now commence.

Check The SCR Control System

The DVOM is a necessary tool for properly testing one’s SCR (Selective Catalytic Reduction) control system. Pushing the fuses and properly loading the circuit is important to ensure accurate results. If reasonable battery voltage and ground circuits are detected, proceeding to the next step is recommended. Using a scanner, activate the heater/s and check the output control voltage. Should the voltage prove insufficient, it may be necessary to replace the SCR controller to resolve any issues with your system.

Replace The Temperature Sensor

The issue may be attributed to a potential malfunction in the temperature sensor, causing it to transmit inaccurate data to the PCM. As a result, the PCM may register an impending freeze of the diesel exhaust fluid and trigger P20B9 code 6.7 Powerstroke. To address this problem, it is recommended that the faulty temperature sensor be replaced and the code cleared. If the code resurfaces upon further inspection and driving, it is advisable to consider checking for any issues with reductant heater A.

Replace Broken Glow Plugs

When glow plugs become damaged, their deteriorating condition can gradually hinder an engine’s performance. In such cases, replacing them with a new set is advisable to restore optimal functioning. By taking this simple and relatively inexpensive step, individuals may also be able to rectify any P20B9 error codes that may have been triggered. However, if this solution is unsuccessful, another method can potentially act as a final remedy for this diagnostic trouble code (DTC).

Check & Replace Reductant Heater A

The wirings and hoses connected to the reductant heater should be thoroughly checked, with particular attention paid to the electrical connectors. Utilizing appropriate equipment when accessing Heater A during visual inspections is important.

Should it be determined that the heater is responsible for any issues, prompt replacement is recommended to ensure optimal functioning.

How Much Does It Cost To Solve The Error Code P20B9?

Replacing the reductant heater A is necessary to resolve the current error code. The cost for this replacement ranges from $300 to $500 for the heater itself. An alternative option is self-installation, saving 150+ dollars in labor expenses. However, if luck does not favor you, there may be a need to replace the PCM for $500 (excluding labor costs).

Common Mistakes While Solving The P20B9 Code 6.7 Powerstroke

One must exercise caution when attempting to troubleshoot the P20B9 error code. To avoid potential errors, it is imperative to prevent committing any common mistakes outlined below.

  • Not Checking The Temperature Sensor Before Replacing The Heater
  • Not Checking Everything Else Before Replacing The PCM

Additional Comments To Consider Regarding The P20B9 Code

One may encounter an issue with the freezing point of DEF at -11° Celsius or 12° Fahrenheit. In a warmer climate, this may not initially cause concern.

Despite the location’s temperature, it is advisable to address this code promptly. Failure to do so could result in significant engine damage over time.

Neglecting proper maintenance and ignoring warning signs can lead to more severe consequences for one’s engine health.

Final Thoughts

The reader can gain a comprehensive understanding of the P20B9 code 6.7 Powerstroke, enabling them to conduct their inspection and repair. This error code can be resolved independently, even for those unfamiliar with the Ford 6.7L engine. However, seeking professional assistance is advised if the PCM is deemed faulty and requires replacement.

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