AutoCodes – Chevrolet – P205F Chevrolet

P205F Chevrolet 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 Chevrolet 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 317

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 21, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P205F Chevrolet 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 Chevrolet - Reductant System Performance Bank 2 - AutoCodes.com — P205F Chevrolet Code - Reductant System Performance Bank 2

What does this mean?

What are the Possible Causes of the DTC P205F Chevrolet?

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 Chevrolet?

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 Chevrolet 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.

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Need more information on how to fix the P205F Chevrolet code? Get Access to Factory Service Manuals

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 Chevrolet Code

1. What are the common symptoms of OBDII code P205F indicating Reductant System Performance Bank 2 issue in a Chevrolet vehicle?

- Common symptoms include poor engine performance, reduced fuel efficiency, and the illumination of the check engine light.

2. What are the possible causes of OBDII code P205F in a Chevrolet related to the Reductant System Performance Bank 2?

- Possible causes may include a faulty reductant injector on Bank 2, issues with the reductant control module, or wiring/connectivity problems.

3. How can I diagnose OBDII code P205F in my Chevrolet to confirm a Reductant System Performance Bank 2 problem?

- Diagnosis involves using an OBDII scanner to retrieve the code, conducting a visual inspection of the reductant system components, and performing tests to pinpoint the exact issue.

4. Can I continue driving my Chevrolet with OBDII code P205F related to Reductant System Performance Bank 2?

- It is not recommended to drive with this code as it can lead to further damage and decreased vehicle performance. It is best to address the issue promptly.

5. What are some repair tips for fixing OBDII code P205F in a Chevrolet due to Reductant System Performance Bank 2 issues?

- Repair tips may include replacing the faulty reductant injector on Bank 2, checking and repairing any wiring faults, and resetting the system after repairs are completed.

6. Is it possible to reset OBDII code P205F in a Chevrolet indicating Reductant System Performance Bank 2 problem without fixing the underlying issue?

- While you can clear the code using an OBDII scanner, the check engine light may reappear if the root cause of the problem is not addressed.

7. How can I prevent OBDII code P205F related to Reductant System Performance Bank 2 from occurring in my Chevrolet?

- Regular maintenance, such as timely reductant system inspections and using high-quality diesel exhaust fluid (DEF), can help prevent this issue.

8. Are there any recalls or technical service bulletins related to OBDII code P205F in Chevrolet vehicles with Reductant System Performance Bank 2 faults?

- It's recommended to check with Chevrolet dealerships or online databases for any relevant recalls or bulletins that may apply to your specific vehicle and issue.

9. Will OBDII code P205F impacting Reductant System Performance Bank 2 cause my Chevrolet to fail emissions testing?

- Yes, this code can indicate a problem with the emissions control system, potentially leading to a failed emissions test until the issue is resolved.

10. How much can I expect to pay for repairing OBDII code P205F in a Chevrolet due to Reductant System Performance Bank 2 concerns?

- Repair costs can vary based on the exact cause of the issue, but expect to pay for parts and labor, with the total bill potentially ranging from a few hundred to over a thousand dollars.