BMW DTC P2247 – O2 Sensor Reference Voltage Circuit/Open (Bank 2 Sensor 1)
DTC P2247 meaning on BMW
The Diagnostic Trouble Code (DTC) P2247 for BMW indicates a fault in the O2 Sensor Reference Voltage Circuit for Bank 2 Sensor 1. This means that there is an open circuit or a lack of communication between the O2 sensor and the Engine Control Module (ECM).
BMW DTC P2247 symptoms
Symptoms of DTC P2247 on a BMW may include:
- Check Engine Light illuminated on the dashboard
- Poor fuel economy
- Engine running rough or misfiring
- Reduced engine performance
BMW DTC P2247 causes
Common causes of DTC P2247 on a BMW include:
- Faulty O2 sensor
- Open or short circuit in the wiring harness
- Corrosion or poor connections in the sensor circuit
- Defective Engine Control Module (ECM)
BMW DTC P2247 seriousness
While DTC P2247 may not cause immediate drivability issues, it can lead to poor engine performance and reduced fuel efficiency. Ignoring this fault can potentially cause damage to other components of the vehicle over time.
How to diagnose DTC P2247 on BMW
To diagnose DTC P2247 on a BMW, you can follow these steps:
- Use a diagnostic scanner to retrieve the fault code and freeze frame data
- Inspect the wiring harness for any visible damage or corrosion
- Check the O2 sensor for proper operation and connection
- Test the O2 sensor reference voltage using a multimeter
- Verify the integrity of the ECM by checking for any related codes
How to fix DTC P2247 on BMW
To fix DTC P2247 on a BMW, you can try the following solutions:
- Replace the faulty O2 sensor
- Repair or replace any damaged wiring in the circuit
- Clean or repair any corroded connections
- If necessary, replace the Engine Control Module (ECM)
How to erase DTC P2247 on BMW
To erase DTC P2247 on a BMW, you can use a diagnostic scanner to clear the fault code from the ECM’s memory. After fixing the underlying issue, you can reset the Check Engine Light and ensure that the fault code does not reappear during subsequent driving cycles.