If your Subaru is experiencing drivability issues, it could result from a P0050 code. The Subaru P0050 code is “HO2S Heater Control Circuit Bank 2 Sensor 1”. This code indicates a problem with the heating element of the Bank 2 oxygen sensor, which controls the fuel mixture for optimal engine performance. Understanding this code’s possible causes and solutions can help you get your Subaru back on the road. Possible causes of this code can include a faulty harness between the ECM and front oxygen sensor connector, a defective harness between the main relay and front oxygen sensor connector, a faulty front oxygen sensor, or a poor contact connection. To troubleshoot and rectify this problem, it is important to identify the exact cause.
📢Read also: Subaru Code P0198
Causes and Solutions for Subaru Code P0050
| Cause | Solution |
|---|---|
| Faulty harness between ECM and front oxygen sensor connector | Check and replace harness as needed |
| Defective harness between the main relay and front oxygen sensor connector | Check and replace harness as needed |
| Faulty front oxygen sensor | Replace the front oxygen sensor |
| Poor contact | Check and clean contact connection |
If your Subaru is experiencing unpleasant drivability issues, it could be due to the P0050 error code. This code is related to the HO2S Heater Control Circuit Bank 2 Sensor 1, which controls the fuel mix for optimal engine performance. Understanding this code’s underlying causes and potential solutions can help you get your Subaru up and running again. The possible causes of this code can include a faulty harness between the ECM and front oxygen sensor connector, a defective harness between the main relay and front oxygen sensor connector, a faulty front oxygen sensor, or a poor contact connection. It is important to determine the exact cause to troubleshoot and fix this issue. Fortunately, this article provides a helpful table of causes and solutions for Subaru code P0050.
Faulty Harness Between ECM and Front Oxygen Sensor Connector
The first issue that may be causing your Subaru code P0050 is a faulty wiring harness between the ECM and the front oxygen sensor connector. This harness connects the ECM to the oxygen sensor, so it needs to be in good working order. You must inspect and replace the harness as required to fix this issue.
⚡️Other article: Subaru Code P0016
Faulty Harness Between the Main Relay and Front Oxygen Sensor Connector
Another potential cause of Subaru code P0050 is a faulty wiring harness between the main relay and the front oxygen sensor connector. This harness connects the main relay to the oxygen sensor and must be in good working order. You must inspect and replace the harness as required to fix this issue.
Faulty Front Oxygen Sensor
If the wiring harnesses between the ECM, main relay, and front oxygen sensor are in good working order, then the next potential cause of Subaru code P0050 is a faulty front oxygen sensor. You will need to replace the front oxygen sensor to fix this issue.
Poor Contact Connection
The last potential cause of Subaru code P0050 is a poor contact connection. To fix this issue, you must check and clean the contact connection.
Conclusion: Troubleshooting Subaru Code P0050
Subaru code P0050 is a common error code caused by several underlying issues. It is important to identify the exact cause to troubleshoot and fix this issue. Possible causes of this code can include a faulty harness between the ECM and front oxygen sensor connector, a defective harness between the main relay and front oxygen sensor connector, a faulty front oxygen sensor, or a poor contact connection. Fortunately, this article provides a helpful table of causes and solutions for Subaru code P0050, which can help you get your Subaru up and running again.
🎯Suggested article: Subaru Code P1560
Was this page helpful?