AutoCodes – Dodge – P20E8 Dodge

P20E8 Dodge Code - Reductant Pressure Too Low

Quick Answer

The Powertrain Control Module (PCM) monitors reductant pressure as the system primes for injection. Common causes include Damaged reductant pump, Damaged reductant injector, Damaged reductant purge valve. 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: P20E8 Dodge indicates Reductant Pressure Too Low.
Common causes: Common causes include Damaged reductant pump, Damaged reductant injector, Damaged reductant purge valve.
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 17,743

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P20E8 Dodge Description

The Powertrain Control Module (PCM) monitors reductant pressure as the system primes for injection. The Aftertreatment DEF pump has internal diagnostics which evaluate whether the DEF pump is able to meet its demand. If the pump reports insufficient performance for more than a threshold time then the P20E8 code is set.

OBDII Code P20E8 Dodge - Reductant Pressure Too Low - AutoCodes.com — P20E8 Dodge Code - Reductant Pressure Too Low

What does this mean?

What are the Possible Causes of the DTC P20E8 Dodge?

Damaged reductant pump
Damaged reductant injector
Damaged reductant purge valve
Damaged reductant pressure line
Damaged reductant pressure sensor

How to Fix the DTC P20E8 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 P20E8 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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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 P20E8 Dodge Code

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art geaham
Date: February 7, 2019 at 5:38 pm

the display comes on and says 5 miles an hour and so many miles service def code p20e8 comes after half mile goes always l have replaced the douser

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