Subaru P0137
O2 Sensor Circuit Low Voltage Bank 1 Sensor 2 • P0138: O2 Sensor Circuit High Voltage Bank 1 Sensor 2 • P0140: O2 Sensor Circuit No Activi
Quick answer
For applicable 2019–2023 Subaru Crosstrek vehicles in the US, P0137 is identified in an official Subaru manufacturer communication as “O2 Sensor Circuit Low Voltage Bank 1 Sensor 2.” The communication concerns availability of new oxygen sensors for this DTC and also references P0138 and P0140.
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1. What does P0137 mean?
For applicable 2019–2023 Subaru Crosstrek vehicles in the US, P0137 is identified in an official Subaru manufacturer communication as “O2 Sensor Circuit Low Voltage Bank 1 Sensor 2.” The communication concerns availability of new oxygen sensors for this DTC and also references P0138 and P0140.
2. Technical explanation
Verified evidence identifies P0137 as an oxygen-sensor circuit low-voltage DTC for Bank 1 Sensor 2. The supplied official manufacturer communication states that new oxygen sensors were developed to address DTCs detected by the Engine Control Module, including P0137. No further diagnostic thresholds, test conditions, or component-failure mechanism are established by the supplied evidence.
3. What system is affected?
Engine Control Module monitoring of the Bank 1 Sensor 2 oxygen-sensor circuit.
4. How serious is this code?
Not yet established by verified evidence.
5. Symptoms you may notice
Not yet established by verified evidence.
6. Possible causes
- The official manufacturer communication states that new oxygen sensors were developed to address P0137. A specific underlying cause is not yet established by verified evidence.
7. Can I still drive the vehicle?
Not yet established by verified evidence.
8. Can I charge the vehicle?
Not yet established by verified evidence.
9. What you can safely do
- Arrange diagnosis by a qualified Subaru service facility.
- Provide the stored DTC and vehicle details to the service facility.
- Do not attempt high-voltage or electrical-system repair procedures without qualified service training.
10. Step-by-step troubleshooting
- Confirm the stored code with appropriate diagnostic equipment.
- Check whether the vehicle is a US-specification 2019–2023 Subaru Crosstrek.
- Consult Subaru manufacturer communication 09-115-24R / NHTSA manufacturer communication 11017437 for applicable service information.
11. When to contact service
Service is recommended because the verified manufacturer communication describes newly developed oxygen sensors intended to address P0137. Whether service is required immediately is not yet established by verified evidence.
12. What the service center may check
- Retrieve and confirm the Engine Control Module DTCs.
- Determine whether Subaru manufacturer communication 09-115-24R applies to the specific vehicle.
- Evaluate the oxygen-sensor service information specified by the applicable manufacturer communication.
13. Possible repair or resolution
- The verified communication reports availability of new oxygen sensors developed to address P0137. Exact repair eligibility, part selection, and repair procedure are not established by the supplied evidence and should be determined by Subaru service information.
14. Affected vehicles
- Subaru Crosstrek · 2019–2023 · US
15. Related TSBs / service bulletins
- NHTSA Manufacturer Communication 11017437, Subaru 09-115-24R, published April 22, 2025. It addresses availability of new oxygen sensors developed for Engine Control Module DTCs including P0137, P0138, and P0140.
16. Recall information
No recall relationship is established by verified evidence.
17. Official manufacturer information
Official source: NHTSA Manufacturer Communication 11017437, Subaru 09-115-24R: https://static.nhtsa.gov/odi/ffdd/tsbs/TSBS_RECEIVED_2025-2026.zip#nhtsa_id=11017437
- NHTSA: NHTSA Manufacturer Communication 11017437: 09-115-24R · official_tsb
19. Frequently asked questions
What does P0137 mean for the applicable Subaru Crosstrek?
The verified manufacturer communication identifies P0137 as “O2 Sensor Circuit Low Voltage Bank 1 Sensor 2.”
Which vehicles are supported by the supplied applicability evidence?
US-market Subaru Crosstrek model years 2019 through 2023.
Is there an official service communication for P0137?
Yes. Subaru communication 09-115-24R, filed by NHTSA as manufacturer communication 11017437, discusses new oxygen sensors developed to address P0137.
Is P0137 a recall?
No recall is established by the supplied verified evidence.