AutoCodes – Dodge – P20FA Dodge

P20FA Dodge Code - Reductant Pump 2 Control Circuit Open

Quick Answer

The Powertrain Control Module (PCM) monitors the Diesel Exhaust Fluid (DEF) pressure buildup system to provide correct (overall) performance. Common causes include Faulty Diesel Exhaust Fluid (DEF) Pump, Diesel Exhaust Fluid Pump harness is open or shorted, Diesel Exhaust Fluid Pump 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: P20FA Dodge indicates Reductant Pump 2 Control Circuit Open.
Common causes: Common causes include Faulty Diesel Exhaust Fluid (DEF) Pump, Diesel Exhaust Fluid Pump harness is open or shorted, Diesel Exhaust Fluid Pump 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 336

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 P20FA Dodge Description

The Powertrain Control Module (PCM) monitors the Diesel Exhaust Fluid (DEF) pressure buildup system to provide correct (overall) performance. If excessive air is detected during pressure buildup, the Purge Pump system draws fluid back into the DEF tank to remove the air. Once the purge is complete the pressure buildup is reinitialized. The Diagnostic Trouble Code (DTC) will be set when the PCM detects an open on the DEF Purge Pump Control circuit for 2.0 seconds.

OBDII Code P20FA Dodge - Reductant Pump 2 Control Circuit Open - AutoCodes.com — P20FA Dodge Code - Reductant Pump 2 Control Circuit Open

What does this mean?

What are the Possible Causes of the DTC P20FA Dodge?

Faulty Diesel Exhaust Fluid (DEF) Pump
Diesel Exhaust Fluid Pump harness is open or shorted
Diesel Exhaust Fluid Pump circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P20FA 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 P20FA 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 P20FA Dodge Code

What does the OBDII code P20FA mean for a Dodge vehicle?

1. The P20FA code indicates an issue with the Reductant Pump 2 Control Circuit, specifically an open circuit, which affects the operation of the diesel exhaust fluid (DEF) system. 2.

What are the common symptoms of the P20FA code in a Dodge?

Symptoms may include the check engine light turning on, DEF system warnings, reduced engine performance, and potential activation of limp mode. 3.

What causes the P20FA code in Dodge vehicles?

Common causes include damaged wiring or connectors in the Reductant Pump 2 circuit, a faulty reductant pump, or a failed control module. 4.

Can I drive my Dodge with the P20FA code active?

Driving with this code is not recommended, as it may lead to reduced performance and could cause the vehicle to enter limp mode or fail emissions tests. 5.

How do you diagnose the P20FA code on a Dodge?

Diagnosis typically involves using a scan tool to confirm the code, inspecting the wiring and connectors for damage, and testing the reductant pump and its circuit for proper operation. 6.

How is the P20FA code fixed in a Dodge vehicle?

Repairs may include replacing damaged wiring, repairing or replacing connectors, installing a new reductant pump, or reprogramming the control module if needed. 7.

What tools are needed to troubleshoot the P20FA code on a Dodge?

Essential tools include an OBDII scanner, a multimeter for checking electrical circuits, and possibly a repair manual for wiring diagrams. 8.

How much does it cost to repair a P20FA code on a Dodge?

Repair costs vary depending on the issue but can range from $100 for wiring repairs to $500 or more if the reductant pump needs replacement. 9.

Can a P20FA code be caused by low DEF fluid levels?

No, this code specifically relates to the control circuit for Reductant Pump 2 and is not directly caused by low DEF fluid. 10.

Will clearing the P20FA code solve the problem?

Clearing the code without addressing the underlying issue will not fix the problem, and the code is likely to return. Proper diagnosis and repair are necessary.