P206D

Symptoms

• Check Engine light comes on
• Reduced engine power
• Increased fuel consumption
• Possible problems with the SCR system
• Errors in the operation of the exhaust gas purification system

Causes

• Reagent quality sensor malfunction
• Open or short circuit in the sensor circuit
• Poor contact in sensor connectors
• Contaminated or poor quality reagent
• Problems with the engine control unit

How to Fix

1. Check the quality and level of the reagent
2. Inspect the sensor wiring and connectors
3. Check the resistance and voltage in the sensor circuit
4. Replace the reagent quality sensor if necessary
5. Reset the error and take a test drive

Related codes

Error P206D by Vehicle Brand