AutoCodes – Chevrolet – P208D Chevrolet

P208D Chevrolet Code - Reductant Pump Control Circuit High Voltage

Quick Answer

The selective catalytic reduction system reduces Oxides of Nitrogen (NOx) emissions by injecting a metered amount of reductant into the exhaust gas stream entering the selective catalytic reduction catalyst. Common causes include Faulty Reductant Pump and Sensor Assembly, Reductant Pump and Sensor Assembly harness is open or shorted, Reductant Pump and Sensor Assembly 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: P208D Chevrolet indicates Reductant Pump Control Circuit High Voltage.
Common causes: Common causes include Faulty Reductant Pump and Sensor Assembly, Reductant Pump and Sensor Assembly harness is open or shorted, Reductant Pump and Sensor Assembly 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 442

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 Jul 26, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P208D Chevrolet Description

The selective catalytic reduction system reduces Oxides of Nitrogen (NOx) emissions by injecting a metered amount of reductant into the exhaust gas stream entering the selective catalytic reduction catalyst. Within the selective catalytic reduction catalyst, the reductant reacts with the NOx to form nitrogen, carbon dioxide, and water vapor. Upstream and downstream NOx sensors provide the Engine Control Module (ECM) and the Reductant Control Module via serial data. The Reductant Control Module varies the amount of reductant added by varying the reductant injector duty cycle in response to changes in engine-out NOx levels. The Reductant Control Module supplies system voltage to the reductant pump motor. The Reductant Control Module controls the solenoid by grounding the control circuit. The Reductant Control Module can determine if the control circuit is open, shorted to ground, or shorted to a voltage by monitoring the feedback voltage. The Diagnostic Trouble Code (DTC) will be set when the Reductant Control Module detects a short to voltage in the control circuit.

OBDII Code P208D Chevrolet - Reductant Pump Control Circuit High Voltage - AutoCodes.com — P208D Chevrolet Code - Reductant Pump Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P208D Chevrolet?

Faulty Reductant Pump and Sensor Assembly
Reductant Pump and Sensor Assembly harness is open or shorted
Reductant Pump and Sensor Assembly circuit poor electrical connection
Faulty Reductant Control Module

How to Fix the DTC P208D Chevrolet?

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 P208D Chevrolet 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 P208D Chevrolet code?

Need more information on how to fix the P208D Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P208D Chevrolet 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 P208D Chevrolet Code

1. What are the common symptoms of OBDII code P208D on a Chevrolet related to the Reductant Pump Control Circuit High Voltage?

- Common symptoms include the check engine light being illuminated, reduced engine performance, and potential issues with the vehicle's emission system.

2. What are the possible causes of the P208D code indicating a high voltage in the Reductant Pump Control Circuit on a Chevrolet?

- Possible causes may include a faulty reductant pump, damaged wiring or connectors in the control circuit, or issues with the powertrain control module (PCM).

3. How can I diagnose the P208D code on my Chevrolet related to the Reductant Pump Control Circuit High Voltage?

- Diagnosing the code typically involves using an OBDII scanner to retrieve the code, inspecting the reductant pump and its connections, and testing the circuit for any issues.

4. Is it safe to continue driving my Chevrolet with the P208D code triggered by the Reductant Pump Control Circuit High Voltage issue?

- It is generally recommended to address the issue promptly to prevent potential damage to the vehicle's emission system and ensure optimal engine performance.

5. Can I repair the P208D code on my Chevrolet related to the Reductant Pump Control Circuit High Voltage issue myself?

- Depending on your level of experience and access to tools, you may be able to address the issue by checking connections, replacing damaged components, or seeking professional help if needed.

6. Are there any specific repair tips for troubleshooting the P208D code on a Chevrolet indicating high voltage in the Reductant Pump Control Circuit?

- When repairing this issue, it is essential to carefully inspect all wiring and connectors, test the reductant pump for proper functionality, and reset the code after completing repairs.

7. Will resetting the OBDII code P208D on my Chevrolet related to the Reductant Pump Control Circuit High Voltage solve the issue?

- Resetting the code may temporarily turn off the check engine light, but it is crucial to diagnose and address the underlying cause of the high voltage in the control circuit to prevent future occurrences.

8. How much does it typically cost to repair the P208D code on a Chevrolet indicating a high voltage in the Reductant Pump Control Circuit?

- The cost of repair can vary depending on the specific cause of the issue, the parts needed for replacement, and whether you choose to perform the repair yourself or seek professional assistance.

9. Can extreme weather conditions or driving habits contribute to triggering the P208D code on a Chevrolet due to the Reductant Pump Control Circuit High Voltage issue?

- Extreme weather conditions or harsh driving habits may potentially exacerbate existing issues with the reductant pump control circuit, leading to the triggering of the P208D code.

10. How can I prevent the recurrence of the P208D OBDII code related to the Reductant Pump Control Circuit High Voltage on my Chevrolet?

- Regular maintenance, including checking the emission system components, ensuring proper driving habits, and addressing any warning lights promptly, can help prevent the recurrence of the P208D code.