BMW DTC P22C1 – O2 Sensor Negative Current Control Circuit High (Bank 2 Sensor 2)
DTC P22C1 meaning on BMW
The DTC P22C1 code on a BMW indicates an issue with the O2 Sensor Negative Current Control Circuit High for Bank 2 Sensor 2. This means that the control module has detected a high voltage signal from the downstream oxygen sensor on the second bank of the engine.
BMW DTC P22C1 symptoms
Symptoms of the DTC P22C1 code on a BMW may include:
- Check Engine Light illuminated
- Poor fuel economy
- Engine running rough
- Decreased engine performance
BMW DTC P22C1 causes
Common causes of the DTC P22C1 code on a BMW include:
- Faulty oxygen sensor
- Wiring or connector issues in the O2 sensor circuit
- Exhaust leaks
- Engine running rich
BMW DTC P22C1 seriousness
The DTC P22C1 code should not be ignored as it can lead to poor engine performance and decreased fuel efficiency. Additionally, prolonged driving with this issue may cause damage to other components of the vehicle.
How to diagnose DTC P22C1 on BMW
To diagnose the DTC P22C1 code on a BMW, a mechanic may perform the following steps:
- Use a scan tool to check for any other related fault codes
- Inspect the wiring and connectors in the O2 sensor circuit
- Test the oxygen sensor for proper operation
- Check for exhaust leaks
How to fix DTC P22C1 on BMW
To fix the DTC P22C1 code on a BMW, the following steps may be taken:
- Replace the faulty oxygen sensor
- Repair any damaged wiring or connectors in the O2 sensor circuit
- Fix any exhaust leaks
- Address any issues causing the engine to run rich
How to erase DTC P22C1 on BMW
After fixing the underlying issue causing the DTC P22C1 code on a BMW, the code can be erased using a scan tool. The scan tool can clear the code and reset the Check Engine Light. It is important to ensure that the issue has been properly addressed before clearing the code.