BMW DTC P0163 – O2 Sensor Circuit Low Voltage (Bank 2 Sensor 3)
DTC P0163 meaning on BMW
The Diagnostic Trouble Code (DTC) P0163 for BMW refers to an issue with the O2 sensor circuit having low voltage on Bank 2 Sensor 3. This code indicates that the oxygen sensor located in the third position on the second bank of cylinders is reporting a voltage below the expected range.
BMW DTC P0163 symptoms
Symptoms of DTC P0163 on a BMW may include:
- Check Engine Light (CEL) illuminated on the dashboard
- Decreased fuel efficiency
- Engine running rough or misfiring
- Reduced engine performance
BMW DTC P0163 causes
Common causes of DTC P0163 on a BMW include:
- Failed O2 sensor Bank 2 Sensor 3
- Wiring or connector issues in the O2 sensor circuit
- Exhaust leaks near the O2 sensor
- Engine running rich or lean
BMW DTC P0163 seriousness
While DTC P0163 may not cause immediate drivability issues, it can lead to decreased fuel efficiency and potentially harm the engine over time if left unresolved. It is recommended to address this code promptly to prevent further damage.
How to diagnose DTC P0163 on BMW
To diagnose DTC P0163 on a BMW, you can follow these steps:
- Use an OBD-II scanner to retrieve the specific fault code
- Inspect the wiring and connectors related to Bank 2 Sensor 3
- Check for exhaust leaks near the O2 sensor
- Test the O2 sensor’s voltage output using a multimeter
How to fix DTC P0163 on BMW
To fix DTC P0163 on a BMW, you can consider the following actions:
- Replace the O2 sensor Bank 2 Sensor 3
- Repair any damaged wiring or connectors in the O2 sensor circuit
- Address any exhaust leaks near the O2 sensor
- Ensure the engine is running at the correct air-fuel ratio
How to erase DTC P0163 on BMW
To erase DTC P0163 on a BMW, you can clear the fault code using an OBD-II scanner. After addressing the underlying issue causing the code, you can reset the Check Engine Light and the DTC by clearing the code with the scanner.
Recommended tools & DTC Scanners for BMW
Best Diagnostic App for modern BMWs: BimmerLink
Recommended Bluetooth adapter for Bimmerlink: OBDLink CX
Cable adapter for Bimmerlink: Enet Cable USB Type C
For older BMWs we recommend: Autel AutoLink AL319 (2024 version)
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
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