AutoCodes – Generic – P208E

P208E Code - Reductant Injection Valve Stuck Closed Bank 1 Unit 1

Quick Answer

The Reductant Dosing Valve (Reductant Injection Valve) is used to meter and atomize the reductant liquid before it is mixed with the exhaust gas. Common causes include Faulty Reductant Injection Valve, Reductant Injection Valve harness is open or shorted, Reductant Injection Valve 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
P208E indicates Reductant Injection Valve Stuck Closed Bank 1 Unit 1.
Common causes
Common causes include Faulty Reductant Injection Valve, Reductant Injection Valve harness is open or shorted, Reductant Injection Valve 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 34,650
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 P208E Description

The Reductant Dosing Valve (Reductant Injection Valve) is used to meter and atomize the reductant liquid before it is mixed with the exhaust gas. Normal operating frequency is between 3 Hz and .3 Hz. The cooling body contains heat sink fins to keep the injector and reductant below the boiling point. If the sensed temperature is nearing the maximum temperature threshold, reductant spray will be increased in quantity to actively cool the valve.
OBDII Code P208E - Reductant Injection Valve Stuck Closed Bank 1 Unit 1 - AutoCodes.com
P208E Code - Reductant Injection Valve Stuck Closed Bank 1 Unit 1

What are the Possible Causes of the DTC P208E?

  • Faulty Reductant Injection Valve
  • Reductant Injection Valve harness is open or shorted
  • Reductant Injection Valve circuit poor electrical connection

How to Fix the DTC P208E?

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 P208E 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 P208E code?

Need more information on how to fix the P208E code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P208E code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

  • P208E Chevrolet β€” Reductant Injection Valve Stuck Closed Bank 1 Unit 1
  • P208E Dodge β€” Reductant Injection Valve Stuck Closed Bank 1 Unit 1
  • P208E Ford β€” Reductant Injection Valve Stuck Closed Bank 1 Unit 1
  • P208E GMC β€” Reductant Injection Valve Stuck Closed Bank 1 Unit 1
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 P208E Code

1. What are the common symptoms of OBDII code P208E (Reductant Injection Valve Stuck Closed Bank 1 Unit 1)?

- Common symptoms include reduced engine performance, decreased fuel efficiency, and the illumination of the Check Engine light.

2. What does the OBDII code P208E indicate about the reductant injection valve?

- This code indicates that the reductant injection valve on Bank 1 Unit 1 is stuck closed, leading to potential issues with the vehicle's emissions system.

3. What are some possible causes of the reductant injection valve being stuck closed?

- Possible causes include a faulty reductant injection valve, wiring issues, software glitches, or a problem with the reductant injection control module.

4. How can I diagnose the cause of OBDII code P208E myself?

- You can start by visually inspecting the reductant injection valve and its wiring for any obvious damage. Using a diagnostic scanner to monitor live data can also help pinpoint the issue.

5. Is it safe to continue driving with OBDII code P208E present?

- It is not recommended to continue driving with this code present, as it can lead to increased emissions and potential damage to the vehicle's emissions system over time.

6. Can I reset the OBDII code P208E and see if it comes back on its own?

- While you can clear the code, it's important to diagnose and address the underlying issue causing the code to prevent further problems with your vehicle.

7. How can I repair OBDII code P208E related to the reductant injection valve?

- Repair options may include replacing the reductant injection valve, repairing damaged wiring, updating software, or replacing the reductant injection control module.

8. Are there any tips to prevent OBDII code P208E from occurring again in the future?

- Regularly servicing your vehicle, addressing any warning lights promptly, and using high-quality diesel exhaust fluid (DEF) can help prevent issues with the reductant injection system.

9. Can a DIY enthusiast fix OBDII code P208E, or should I seek professional help?

- Depending on your skill level and access to tools, you may be able to address simpler issues related to this code. For complex problems or if you're unsure, it's best to consult a professional mechanic.

10. Will OBDII code P208E cause my vehicle to fail an emissions test?

- Yes, having this code present can cause your vehicle to fail an emissions test due to issues with the reductant injection system. It's important to address the problem before undergoing any emissions testing.

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