AutoCodes – Dodge – P205F Dodge

P205F Dodge Code - Reductant System Performance Bank 2

Quick Answer

The Selective Catalytic Reduction (SCR) system reduces oxides of nitrogen (NOx) emissions by injecting a metered amount of Diesel Exhaust Fluid (DEF) or reductant into the exhaust gas stream entering the SCR catalyst. Common causes include Faulty Emission Reduction Fluid Injector, Emission Reduction Fluid Injector harness is open or shorted, Emission Reduction Fluid Injector circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P205F Dodge indicates Reductant System Performance Bank 2.
Common causes
Common causes include Faulty Emission Reduction Fluid Injector, Emission Reduction Fluid Injector harness is open or shorted, Emission Reduction Fluid Injector circuit poor electrical connection.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code Popularity 270
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 21, 2022
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Code P205F Dodge Description

The Selective Catalytic Reduction (SCR) system reduces oxides of nitrogen (NOx) emissions by injecting a metered amount of Diesel Exhaust Fluid (DEF) or reductant into the exhaust gas stream entering the SCR catalyst. Within the SCR catalyst, the DEF reacts with the NOx to form nitrogen, carbon dioxide, and water vapor. Upstream and downstream NOx sensors provide the Engine Control Module (ECM) with engine-out and tailpipe-out NOx levels. The ECM varies the amount of DEF added by varying the reductant injector duty cycle in response to changes in engine-out NOx levels.
The ECM supplies system voltage to the reductant pump motor. The ECM controls the solenoid by grounding the control circuit with a solid-state device called a driver. The driver is equipped with a feedback circuit that is pulled up to a voltage. The ECM can determine if the control circuit is open, shorted to ground, or shorted to a voltage by monitoring the feedback voltage. The ECM supplies a ground to the low reference circuit. As the duty cycle increases, the output of the reductant pump increases.
The ECM detects the reductant pressure did not reach a calibrated pressure after an initial attempt to build up pressure. The ECM will then reduce reductant pressure and then attempt to build pressure again. If the ECM detects reductant pressure is still less than a calibrated threshold, a Diagnostic Trouble Code (DTC) is set.
OBDII Code P205F Dodge - Reductant System Performance Bank 2 - AutoCodes.com
P205F Dodge Code - Reductant System Performance Bank 2

What are the Possible Causes of the DTC P205F Dodge?

  • Faulty Emission Reduction Fluid Injector
  • Emission Reduction Fluid Injector harness is open or shorted
  • Emission Reduction Fluid Injector circuit poor electrical connection
  • Faulty Reductant Pump Motor

How to Fix the DTC P205F Dodge?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P205F Dodge code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P205F Dodge code?

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Need Help with the Code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P205F Dodge Code

1. What are the common symptoms of OBDII code P205F (Reductant System Performance Bank 2) in a Dodge?

Symptoms may include reduced engine performance, decreased fuel efficiency, and the illumination of the Check Engine light.

2. What can cause the OBDII code P205F to trigger in a Dodge?

Possible causes include a faulty reductant injector, issues with the reductant pump, wiring problems, or a malfunctioning reductant control module.

3. How can I diagnose the OBDII code P205F in my Dodge?

Diagnosis typically involves using an OBDII scanner to retrieve the specific fault code, inspecting the reductant system components for damage or leaks, and testing the electrical connections.

4. Is it safe to continue driving my Dodge with the OBDII code P205F present?

While the vehicle may still be operable, it is recommended to address the issue promptly to prevent potential damage to the reductant system and ensure optimal engine performance.

5. Can I repair the OBDII code P205F issue in my Dodge myself?

Depending on your automotive knowledge and skills, you may be able to address simpler causes such as faulty wiring connections. However, more complex issues may require professional diagnosis and repair.

6. How much does it typically cost to repair the OBDII code P205F in a Dodge?

Repair costs can vary depending on the exact cause of the issue, but they may range from a few hundred to a few thousand dollars, including parts and labor.

7. Are there any preventive maintenance steps I can take to avoid the OBDII code P205F in my Dodge?

Regularly servicing the reductant system, using quality diesel exhaust fluid, and addressing any warning signs promptly can help prevent issues that may trigger this fault code.

8. Can a dirty fuel filter cause the OBDII code P205F to appear in a Dodge?

While a dirty fuel filter is not a direct cause of this specific fault code, it can contribute to overall engine performance issues that may affect the reductant system.

9. Will resetting the Check Engine light make the OBDII code P205F go away permanently?

Resetting the Check Engine light without addressing the underlying issue will not permanently resolve the fault code. It is crucial to diagnose and repair the root cause to prevent recurrence.

10. How long does it typically take to repair the OBDII code P205F in a Dodge?

The repair time can vary based on the complexity of the issue and the availability of parts. Simple fixes may be completed in a few hours, while more involved repairs could take a day or more.

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