BMW DTC P220B – NOx Sensor Supply Voltage Circuit (Bank 1 Sensor 2)
DTC P220B meaning on BMW
The Diagnostic Trouble Code (DTC) P220B for BMW refers to an issue with the NOx (Nitrogen Oxide) sensor supply voltage circuit for Bank 1 Sensor 2. This code indicates that there is a problem with the electrical circuit that supplies voltage to the NOx sensor located downstream in the exhaust system.
BMW DTC P220B symptoms
Symptoms of the DTC P220B on a BMW may include:
- Check Engine Light (MIL) illuminated
- Reduced engine performance
- Increased fuel consumption
- Possible emission issues
BMW DTC P220B causes
Common causes of the DTC P220B on a BMW include:
- Faulty NOx sensor
- Wiring or connector issues in the sensor circuit
- Corrosion or damage to the sensor or wiring
- Issues with the power supply to the sensor
BMW DTC P220B seriousness
The DTC P220B should not be ignored as it can lead to increased emissions, reduced engine performance, and potential long-term damage to the vehicle’s emissions control system. It is important to address this issue promptly to ensure proper vehicle operation and compliance with emissions regulations.
How to diagnose DTC P220B on BMW
To diagnose the DTC P220B on a BMW, a mechanic would typically perform the following steps:
- Use a diagnostic scanner to retrieve the fault code and related data
- Inspect the wiring and connectors associated with the NOx sensor
- Test the NOx sensor for proper operation
- Check the power supply to the sensor
How to fix DTC P220B on BMW
To fix the DTC P220B on a BMW, the following steps may be taken:
- Replace the faulty NOx sensor if necessary
- Repair or replace any damaged wiring or connectors
- Ensure proper power supply to the sensor
- Clear the fault code and perform a test drive to verify the repair
How to erase DTC P220B on BMW
To erase the DTC P220B on a BMW, a diagnostic scanner can be used to clear the fault code from the vehicle’s engine control module (ECM). Once the repair has been completed and the issue resolved, the fault code can be cleared to reset the Check Engine Light and ensure that the repair was successful.