P220A
NOx Sensor Supply Voltage Circuit Bank 1 Sensor 1
P220A is an OBD-II diagnostic trouble code meaning: NOx Sensor Supply Voltage Circuit Bank 1 Sensor 1. Common causes: open or short circuit in the nox sensor power supply circuit, poor contact in the sensor connector. Estimated repair cost: $56–167.
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
- Check the integrity of the NOx sensor wiring and connectors
- Check the voltage in the sensor power circuit
- Check NOx sensor resistance and signal
- If necessary, replace the NOx sensor
- Check and update the ECU firmware if necessary
Related codes
Error P220A by Vehicle Brand
FAQ
What does the P220A code mean?
P220A is an OBD-II diagnostic trouble code that indicates: NOx Sensor Supply Voltage Circuit Bank 1 Sensor 1
What causes a P220A error code?
The most common causes of P220A include: 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.
How do I fix a P220A diagnostic trouble code?
To fix P220A: Check the integrity of the NOx sensor wiring and connectors. Check the voltage in the sensor power circuit. Check NOx sensor resistance and signal. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P220A?
Yes, but get it checked soon
How much does it cost to fix P220A?
The estimated repair cost for P220A is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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