AutoCodes – Ford – P20E9 Ford

P20E9 Ford Code - Reductant Pressure Too High

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
P20E9 Ford indicates Reductant Pressure Too High.
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 16,397
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P20E9 Ford 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 P20E9 Ford - Reductant Pressure Too High - AutoCodes.com
P20E9 Ford Code - Reductant Pressure Too High

What are the Possible Causes of the DTC P20E9 Ford?

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

How to Fix the DTC P20E9 Ford?

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 P20E9 Ford 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.

Need more information about the P20E9 Ford code?

Need more information on how to fix the P20E9 Ford code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P20E9 Ford 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 P20E9 Ford Code

1. What are the common symptoms of OBDII code P20E9 Ford (Reductant Pressure Too High)?

The common symptoms include the Check Engine Light (CEL) illuminating on the dashboard, reduced engine power, and potential issues with the vehicle's exhaust system.

2. What can cause the OBDII code P20E9 Ford to trigger (Reductant Pressure Too High)?

The code may be triggered due to issues such as a faulty pressure sensor, a clogged diesel particulate filter (DPF), a malfunctioning reductant pump, or a software glitch in the engine control module.

3. How can I diagnose the cause of OBDII code P20E9 Ford (Reductant Pressure Too High)?

Diagnosis typically involves using a diagnostic scanner to retrieve the trouble codes, checking the reductant pressure sensor readings, inspecting the DPF for any blockages, and testing the reductant pump functionality.

4. What are the potential risks of ignoring the OBDII code P20E9 Ford (Reductant Pressure Too High)?

Ignoring this code can lead to increased emissions, reduced fuel efficiency, and potential damage to the engine or emissions control system over time.

5. Can I drive my vehicle with the OBDII code P20E9 Ford (Reductant Pressure Too High) active?

It is not recommended to drive the vehicle with this code active, as it can lead to further damage and potential safety hazards. It's best to address the issue promptly.

6. How can I repair OBDII code P20E9 Ford (Reductant Pressure Too High) myself?

DIY repair options may include checking and cleaning the reductant pressure sensor, inspecting and cleaning the DPF, checking for loose or damaged connections, and resetting the trouble codes with a diagnostic scanner.

7. Is it necessary to replace parts to fix OBDII code P20E9 Ford (Reductant Pressure Too High)?

Depending on the root cause of the issue, parts replacement may be necessary. It's crucial to diagnose the problem accurately before determining the appropriate repair steps.

8. How much does it typically cost to repair OBDII code P20E9 Ford (Reductant Pressure Too High)?

The cost of repair can vary widely based on factors such as the specific cause of the issue, labor rates, and the need for parts replacement. It's advisable to consult a professional for an accurate estimate.

9. Can a software update fix OBDII code P20E9 Ford (Reductant Pressure Too High)?

In some cases, a software update from the manufacturer may address the code if it was triggered by a programming issue. Consulting with a dealership or qualified mechanic is recommended.

10. How can I prevent OBDII code P20E9 Ford (Reductant Pressure Too High) from recurring?

Regular maintenance, such as following the manufacturer's recommended service schedule, using quality diesel exhaust fluid (DEF), and avoiding driving habits that can lead to DPF issues, can help prevent the recurrence of this code.

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