AutoCodes – Generic – P206D

P206D 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 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 14,114
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 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 - Reductant Quality Sensor Circuit High Voltage - AutoCodes.com
P206D Code - Reductant Quality Sensor Circuit High Voltage

What are the Possible Causes of the DTC P206D?

  • 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?

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 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 code?

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Need Help with the Code?

Get the P206D code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

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 Code

1. What are the common symptoms of OBDII code P206D (Reductant Quality Sensor Circuit High Voltage)?

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

2. What can cause the OBDII code P206D to trigger?

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

3. How serious is the OBDII code P206D (Reductant Quality Sensor Circuit High Voltage)?

- While the code itself may not cause immediate harm to the vehicle, ignoring it can lead to decreased fuel efficiency, increased emissions, and potential damage to the catalytic converter.

4. How can I diagnose the cause of OBDII code P206D?

- To diagnose the issue, you may need to use a scan tool to read the code, inspect the reductant quality sensor and its wiring, and perform voltage tests to determine if the sensor is functioning properly.

5. Can I drive my vehicle with the OBDII code P206D present?

- It is generally not recommended to drive the vehicle with the code P206D active, as it can affect the vehicle's performance and emissions. It's best to address the issue promptly.

6. How can I repair OBDII code P206D (Reductant Quality Sensor Circuit High Voltage)?

- Repairing the code may involve replacing the reductant quality sensor, repairing any damaged wiring, or reprogramming the engine control module to address the high voltage issue.

7. Can a DIY enthusiast fix the OBDII code P206D issue?

- Depending on your skill level and access to tools, DIY enthusiasts may be able to address the code P206D by replacing the reductant quality sensor or repairing wiring issues. However, professional diagnosis is recommended.

8. How much does it cost to repair OBDII code P206D?

- The cost of repairing the code P206D can vary depending on the cause of the issue, parts needed, labor rates, and whether you choose to address the problem yourself or take it to a mechanic.

9. Will resetting the Check Engine Light resolve OBDII code P206D?

- Resetting the Check Engine Light may temporarily turn it off, but it will not fix the underlying issue causing the code P206D. It's important to diagnose and repair the problem to prevent further issues.

10. How can I prevent OBDII code P206D from reoccurring?

- To prevent the code P206D from reoccurring, it's essential to address the root cause of the issue, perform regular maintenance on the vehicle's emissions system, and address any related issues promptly.

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