AutoCodes – Chevrolet – P208A Chevrolet

P208A Chevrolet Code - Reductant Pump Control Circuit

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: P208A Chevrolet indicates Reductant Pump Control Circuit.
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.

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Code Popularity 2,329

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
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Code P208A 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 an open circuit in the control circuit.

OBDII Code P208A Chevrolet - Reductant Pump Control Circuit - AutoCodes.com — P208A Chevrolet Code - Reductant Pump Control Circuit

What does this mean?

What are the Possible Causes of the DTC P208A 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 P208A 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 P208A 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.

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Need more information on how to fix the P208A Chevrolet code? Get Access to Factory Service Manuals

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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 P208A Chevrolet Code

1. What does the OBDII code P208A for Chevrolet indicate?

The code P208A indicates a problem with the Reductant Pump Control Circuit in the vehicle's emission control system.

2. What are the common symptoms of a Reductant Pump Control Circuit issue?

Common symptoms include the Check Engine Light illuminating, reduced engine performance, increased fuel consumption, and potential failures to meet emission standards.

3. What are the possible causes of the P208A code in a Chevrolet vehicle?

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

4. How can I diagnose a Reductant Pump Control Circuit issue related to code P208A?

Diagnostic steps may include checking the reductant pump and its wiring for damage, testing the control circuit for continuity, and using a scan tool to monitor the operation of the reductant pump.

5. What are some repair tips for addressing the P208A code in a Chevrolet?

Repair tips may include repairing or replacing damaged wiring, connectors, or components in the control circuit, ensuring proper connection and operation of the reductant pump, and clearing the code with a scan tool after repairs.

6. Can driving with the P208A code present cause further damage to the vehicle?

Continued driving with the P208A code present can potentially cause damage to the vehicle's emission control system, decrease fuel efficiency, and lead to other related issues over time.

7. Is it safe to continue driving my Chevrolet with the P208A code illuminated?

While the vehicle may still be operable with the P208A code present, it is recommended to address the issue promptly to prevent potential damage and ensure the vehicle meets emission standards.

8. How much does it typically cost to repair a Reductant Pump Control Circuit issue triggering the P208A code?

The cost of repairs for a P208A code can vary depending on the specific cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

9. Can I clear the P208A code myself, or do I need to visit a mechanic?

While you can clear the code with an OBDII scan tool, it is recommended to have a mechanic diagnose and address the underlying issue causing the P208A code to prevent further problems.

10. How long does it usually take to repair a Reductant Pump Control Circuit issue associated with the P208A code?

The repair time can vary based on the exact cause of the issue and the complexity of the repair, but it may take a few hours to a full day to diagnose and fix a Reductant Pump Control Circuit problem triggering the P208A code.