AutoCodes – RAM – P20F5 RAM

P20F5 RAM Code - Reductant Consumption Too High

Quick Answer

The Powertrain Control Module (PCM) monitors the Diesel Exhaust Fluid (DEF) consumption by comparing the DEF pressure in the supply line to the known DEF Supply Pump volume. Common causes include Diesel Exhaust Fluid (DEF) Pressure Line Damage or Fittings Restricted, Faulty DEF Supply Pump Assembly. 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: P20F5 RAM indicates Reductant Consumption Too High.
Common causes: Common causes include Diesel Exhaust Fluid (DEF) Pressure Line Damage or Fittings Restricted, Faulty DEF Supply Pump Assembly.
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 368

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 May 18, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P20F5 RAM Description

The Powertrain Control Module (PCM) monitors the Diesel Exhaust Fluid (DEF) consumption by comparing the DEF pressure in the supply line to the known DEF Supply Pump volume. This rationality comparison will detect DEF consumption high or low failures. The PCM will illuminate the MIL light immediately after the diagnostics runs and fails. The DEF injection into the aftertreatment system will be disabled.

OBDII Code P20F5 RAM - Reductant Consumption Too High - AutoCodes.com — P20F5 RAM Code - Reductant Consumption Too High

What does this mean?

What are the Possible Causes of the DTC P20F5 RAM?

Diesel Exhaust Fluid (DEF) Pressure Line Damage or Fittings Restricted
Faulty DEF Supply Pump Assembly

How to Fix the DTC P20F5 RAM?

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 P20F5 RAM 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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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 P20F5 RAM Code

1. What are the common symptoms of OBDII code P20F5 RAM - Reductant Consumption Too High?

- Common symptoms include the check engine light illuminating, reduced engine performance, and potential issues with the exhaust system.

2. What are the possible causes of OBDII code P20F5 RAM - Reductant Consumption Too High?

- The code can be triggered by a faulty reductant control module, a malfunctioning reductant injector, or issues with the exhaust system components.

3. How can I diagnose OBDII code P20F5 RAM - Reductant Consumption Too High?

- Diagnosis typically involves using a diagnostic scanner to read the trouble codes, checking the reductant system components for any visible damage or leaks, and performing a thorough inspection of the exhaust system.

4. What are some repair tips for addressing OBDII code P20F5 RAM - Reductant Consumption Too High?

- Repair tips may include replacing the reductant control module, inspecting and cleaning the reductant injector, checking and repairing any exhaust leaks, and resetting the trouble codes after repairs.

5. Can I continue driving my vehicle with OBDII code P20F5 RAM - Reductant Consumption Too High?

- It is not recommended to continue driving the vehicle with this code as it can lead to reduced engine performance and potential damage to the exhaust system components.

6. How much does it typically cost to repair OBDII code P20F5 RAM - Reductant Consumption Too High?

- The cost of repairs can vary depending on the specific issue causing the code, but it may range from a few hundred to a few thousand dollars, including parts and labor.

7. Are there any preventative maintenance measures to avoid OBDII code P20F5 RAM - Reductant Consumption Too High?

- Regularly servicing the reductant system components, keeping up with maintenance schedules, and addressing any issues promptly can help prevent this code from occurring.

8. Can a DIY enthusiast fix OBDII code P20F5 RAM - Reductant Consumption Too High?

- While some enthusiasts may have the skills to diagnose and repair this code, it is recommended to consult a professional mechanic for proper diagnosis and repair to ensure the issue is resolved correctly.

9. How long does it take to repair OBDII code P20F5 RAM - Reductant Consumption Too High?

- The repair time can vary based on the specific issue causing the code and the extent of the repairs needed, but it may take a few hours to a full day to address the issue effectively.

10. Will resetting the trouble codes fix OBDII code P20F5 RAM - Reductant Consumption Too High?

- Resetting the trouble codes may temporarily clear the check engine light, but it will not fix the underlying issue causing the code. It is essential to diagnose and address the root cause of the problem for a permanent solution.