If you own a BMW, you may have recently been presented with the diagnostic trouble code P2273. When this code appears on your BMW, it means that the O2 Sensor Signal Stuck Rich Bank 2 Sensor 2 has been detected. This code can be a tricky one to diagnose as there are several potential causes. To better understand the causes and solutions of this code, a detailed overview of the BMW P2273 Code is necessary.
Causes and Solutions of BMW P2273 Code
| Cause | Solution |
|---|---|
| Oxygen sensor (before catalytic converter) is faulty | Replace the faulty oxygen sensor. |
| Oxygen sensor heater (before catalytic converter) is faulty | Replace the faulty oxygen sensor heater. |
| Oxygen sensor heater (behind catalytic converter) is faulty | Replace the oxygen sensor heater behind the catalytic converter. |
| O2S circuit has a short to ground | Repair the short to ground in the O2S circuit. |
Oxygen Sensor Faulty
When the oxygen sensor (before the catalytic converter) is faulty, the BMW P2273 Code is triggered. This code is caused by the O2 Sensor Signal Stuck Rich Bank 2 Sensor 2. In this case, the oxygen sensor should be replaced.
Oxygen Sensor Heater Faulty
If the oxygen sensor heater (before the catalytic converter) is faulty, the BMW P2273 code is triggered. This code is caused by the O2 Sensor Signal Stuck Rich Bank 2 Sensor 2. In this case, the oxygen sensor heater should be replaced.
O2S Circuit Has a Short to Ground
The O2S circuit may have a short to ground, which triggers the BMW P2273 code. This code is caused by the O2 Sensor Signal Stuck Rich Bank 2 Sensor 2. In this case, the short to ground in the O2S circuit should be repaired.
Conclusion
The BMW P2273 Code is triggered when the O2 Sensor Signal Stuck Rich Bank 2 Sensor 2 is detected. This code can be caused by a faulty oxygen sensor, a faulty oxygen sensor heater, or a short to ground in the O2S circuit. In order to resolve the issue, the faulty parts must be replaced or the short must be repaired. It is important to diagnose and resolve the BMW P2273 Code as soon as possible to avoid further damage to the vehicle.
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