AutoCodes – Dodge – P20F5 Dodge

P20F5 Dodge 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 Dodge 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 358

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 Dodge 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 Dodge - Reductant Consumption Too High - AutoCodes.com — P20F5 Dodge Code - Reductant Consumption Too High

What does this mean?

What are the Possible Causes of the DTC P20F5 Dodge?

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

How to Fix the DTC P20F5 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 P20F5 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.

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Need Help with the Code?

Get the P20F5 Dodge code diagnosed by a professional: Find a repair shop in your area

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 Dodge Code

1. What does the OBDII code P20F5 mean on a Dodge?

The P20F5 code indicates "Reductant Consumption Too High," meaning the vehicle's onboard system has detected excessive usage of diesel exhaust fluid (DEF) in the selective catalytic reduction (SCR) system.

2. What are the common symptoms of the P20F5 code on a Dodge?

Symptoms may include an illuminated check engine light, poor fuel economy, increased DEF consumption, reduced engine performance, or warnings related to the emissions system.

3. What causes the P20F5 code to appear?

Common causes include a faulty DEF injector, leaks in the DEF system, software issues in the powertrain control module (PCM), or malfunctioning NOx sensors.

4. Can driving with the P20F5 code damage the vehicle?

Prolonged driving with this code may lead to reduced engine performance, increased emissions, and potential damage to the SCR system if not addressed promptly.

5. How do you diagnose the P20F5 code on a Dodge?

Diagnosis involves scanning for codes with an OBDII scanner, inspecting the DEF system for leaks or blockages, checking the DEF injector, and testing the NOx sensors for proper operation.

6. How can the P20F5 code be fixed?

Repairs may include replacing a faulty DEF injector, fixing leaks in the DEF system, updating PCM software, or replacing malfunctioning NOx sensors.

7. Can a clogged DEF injector cause the P20F5 code?

Yes, a clogged or malfunctioning DEF injector can lead to excessive DEF consumption, triggering the P20F5 code.

8. Is the P20F5 code covered under warranty for Dodge vehicles?

It depends on the warranty terms and the vehicle's age or mileage. Emissions-related components, like the SCR system, may be covered under a federally mandated emissions warranty.

9. How much does it cost to repair a P20F5 code on a Dodge?

Repair costs vary but may range from $200 to $1,500, depending on whether the issue involves cleaning, replacing components, or reprogramming the PCM.

10. Can low-quality DEF trigger the P20F5 code?

Yes, using contaminated or low-quality DEF can lead to excessive consumption and trigger the P20F5 code. Always use DEF that meets ISO 22241 standards.