AutoCodes – Buick – P206D Buick

P206D Buick Code - Reductant Quality Sensor Circuit High Voltage

Quick Answer

The Reductant Quality Sensor is located in the reductant tank and uses an ultrasonic signal to measure reductant fluid quality. Common causes include Faulty Reductant Quality Sensor, Reductant Quality Sensor harness is open or shorted, Reductant Quality Sensor 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
P206D Buick indicates Reductant Quality Sensor Circuit High Voltage.
Common causes
Common causes include Faulty Reductant Quality Sensor, Reductant Quality Sensor harness is open or shorted, Reductant Quality Sensor 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 396
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 26, 2021
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Code P206D Buick Description

The Reductant Quality Sensor is located in the reductant tank and uses an ultrasonic signal to measure reductant fluid quality. The reductant quality sensor includes an integrated temperature sensor to measure reductant fluid temperature. The Reductant Quality Sensor communicates with the Reductant Control Module using serial data. The Diagnostic Trouble Code (DTC) will be set Reductant Control Module detects that the Reductant Quality Sensor signal is out of range high for
greater than 5 s.
OBDII Code P206D Buick - Reductant Quality Sensor Circuit High Voltage - AutoCodes.com
P206D Buick Code - Reductant Quality Sensor Circuit High Voltage

What are the Possible Causes of the DTC P206D Buick?

  • Faulty Reductant Quality Sensor
  • Reductant Quality Sensor harness is open or shorted
  • Reductant Quality Sensor circuit poor electrical connection

How to Fix the DTC P206D 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 P206D 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 P206D 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 P206D Buick Code

1. What are common symptoms of OBDII code P206D in a Buick related to the Reductant Quality Sensor Circuit High Voltage?

- Common symptoms include the Check Engine Light illuminating, reduced engine performance, and potential issues with the vehicle's emissions system.

2. What could cause the OBDII code P206D - Reductant Quality Sensor Circuit High Voltage in a Buick?

- The code P206D may be triggered by a faulty reductant quality sensor, wiring issues, a defective sensor circuit, or problems with the engine control module.

3. How serious is the OBDII code P206D in a Buick?

- While the code P206D may not cause immediate drivability issues, it is important to address it promptly to avoid potential damage to the vehicle's emissions system and ensure optimal engine performance.

4. Can I continue driving my Buick with the OBDII code P206D present?

- It is generally not recommended to continue driving the vehicle with the code P206D active, as it may lead to increased emissions, reduced fuel efficiency, and potential long-term damage to the engine.

5. How can I diagnose and repair the OBDII code P206D in my Buick?

- Diagnosing and repairing the code P206D typically involves using a diagnostic scanner to pinpoint the issue with the reductant quality sensor circuit, checking for wiring problems, and potentially replacing the sensor or repairing faulty connections.

6. Will resetting the Check Engine Light resolve the OBDII code P206D in a Buick?

- Resetting the Check Engine Light may temporarily turn it off, but it will not fix the underlying issue causing the code P206D. It is important to diagnose and address the root cause of the problem to prevent it from recurring.

7. How much does it cost to fix the OBDII code P206D in a Buick?

- The cost of fixing the code P206D can vary depending on the exact cause of the issue. It may involve replacing the reductant quality sensor, repairing wiring, or addressing issues with the engine control module. Costs can range from a few hundred to over a thousand dollars.

8. Can a DIY enthusiast repair the OBDII code P206D in a Buick?

- Depending on the individual's skill level and access to tools, a DIY enthusiast may be able to diagnose and repair the code P206D by following a step-by-step repair guide. However, it is recommended to consult a professional if unsure about the repair process.

9. How long does it typically take to repair the OBDII code P206D in a Buick?

- The repair time for the code P206D can vary based on the complexity of the issue. Simple fixes like replacing a sensor may take an hour or two, while more intricate repairs involving wiring or module issues could take several hours or longer.

10. Is the OBDII code P206D specific to Buick vehicles, or can it occur in other car makes?

- The OBDII code P206D related to the Reductant Quality Sensor Circuit High Voltage can occur in various car makes and models, not just limited to Buick vehicles. The underlying causes and repair procedures may be similar across different brands.

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