P220A

Symptoms

• Check Engine Light Is On
• Increased fuel consumption
• Reduced engine power
• The car goes into emergency mode
• Dips during acceleration

Causes

• Open or short circuit in the NOx sensor power supply circuit
• Poor contact in the sensor connector
• NOx sensor malfunction
• Problems with the engine control unit
• Corroded contacts or damaged wiring

How to Fix

1. Check the integrity of the NOx sensor wiring and connectors
2. Check the voltage in the sensor power circuit
3. Check NOx sensor resistance and signal
4. If necessary, replace the NOx sensor
5. Check and update the ECU firmware if necessary

Related codes

Error P220A by Vehicle Brand