P220B
NOx Sensor Supply Voltage Circuit Bank 1 Sensor 2
P220B is an OBD-II diagnostic trouble code meaning: NOx Sensor Supply Voltage Circuit Bank 1 Sensor 2. Common causes: open or short circuit in the nox sensor power supply circuit, nox sensor malfunction. Estimated repair cost: $56–167.
Symptoms
- Check Engine Light Is On
- Deterioration of vehicle dynamics
- Increased fuel consumption
- Dips during acceleration
- Unstable engine idling
Causes
- Open or short circuit in the NOx sensor power supply circuit
- NOx sensor malfunction
- Poor contact in the sensor connector
- Wiring harness damage
- Engine control unit malfunction
How to Fix
- Check the integrity of the sensor wiring and connectors
- Measure the voltage in the sensor power circuit
- Check NOx sensor resistance
- Replace NOx sensor if necessary
- Scan the engine control module for additional errors
Related codes
Error P220B by Vehicle Brand
FAQ
What does the P220B code mean?
P220B is an OBD-II diagnostic trouble code that indicates: NOx Sensor Supply Voltage Circuit Bank 1 Sensor 2
What causes a P220B error code?
The most common causes of P220B include: Open or short circuit in the NOx sensor power supply circuit; NOx sensor malfunction; Poor contact in the sensor connector; Wiring harness damage.
How do I fix a P220B diagnostic trouble code?
To fix P220B: Check the integrity of the sensor wiring and connectors. Measure the voltage in the sensor power circuit. Check NOx sensor resistance. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P220B?
Yes, but get it checked soon
How much does it cost to fix P220B?
The estimated repair cost for P220B is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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