AutoCodes – Buick – P208A Buick

P208A Buick 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 Buick 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 786

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 Buick 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 Buick - Reductant Pump Control Circuit - AutoCodes.com — P208A Buick Code - Reductant Pump Control Circuit

What does this mean?

What are the Possible Causes of the DTC P208A Buick?

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 Buick?

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 Buick 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 P208A Buick code?

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Need Help with the Code?

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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 Buick Code

1. What are the common symptoms of OBDII code P208A in a Buick related to the Reductant Pump Control Circuit?

- Common symptoms include engine stalling, reduced engine power, and the illumination of the Check Engine Light.

2. What are the possible causes of OBDII code P208A in a Buick?

- The code P208A in a Buick related to the Reductant Pump Control Circuit can be caused by a faulty reductant pump, wiring issues, or a malfunctioning control module.

3. How serious is OBDII code P208A in a Buick?

- OBDII code P208A related to the Reductant Pump Control Circuit should be addressed promptly to prevent potential damage to the vehicle's emission control system.

4. Can I continue driving my Buick with OBDII code P208A?

- It is not recommended to continue driving your Buick with OBDII code P208A as it can lead to engine performance issues and affect emissions.

5. How can I diagnose OBDII code P208A in my Buick?

- Diagnosing OBDII code P208A involves using a diagnostic scan tool to retrieve the specific fault code, followed by inspecting the reductant pump, wiring, and control module for any issues.

6. What are some repair tips for fixing OBDII code P208A in a Buick?

- Repair tips for OBDII code P208A may include checking and repairing any damaged wiring, replacing the faulty reductant pump, or reprogramming the control module as needed.

7. How much does it cost to repair OBDII code P208A in a Buick?

- The cost of repairing OBDII code P208A in a Buick can vary depending on the extent of the issue, parts needed for replacement, and labor costs. It is recommended to consult with a mechanic for an accurate estimate.

8. Can I reset OBDII code P208A in my Buick without fixing the issue?

- While you can reset the Check Engine Light associated with OBDII code P208A, it is not recommended to do so without addressing the underlying issue, as it may reoccur and potentially lead to further problems.

9. How long does it take to repair OBDII code P208A in a Buick?

- The time it takes to repair OBDII code P208A in a Buick can vary depending on the complexity of the issue and the availability of parts. It is advisable to consult with a professional mechanic for a more precise timeframe.

10. Is OBDII code P208A specific to Buick vehicles only?

- OBDII code P208A related to the Reductant Pump Control Circuit can be found in various vehicle makes and models equipped with an OBDII system, not exclusive to Buick vehicles.