P0137 on Subaru vehicles Downstream bank 1 oxygen sensor reading stuck low
P0137 is named on 36 Subaru model years (2016–2024): 70 manufacturer filings and 1 owner report in NHTSA’s files, across BRZ, Crosstrek, Forester, Impreza, Legacy and 2 more.
Which Subaru model years name P0137
Source: NHTSA manufacturer communications and complaintsA model year is listed because the code is named in its own record — a bulletin filed against it, or an owner’s complaint about it — not because every one of these vehicles sets it. Counts are documents in NHTSA’s files, not failure rates.
What Subaru owners said
Source: NHTSA complaint databaseOwners’ own words, scrubbed of anything identifying. Unverified reports filed with NHTSA — what was said, not a finding that it was true.
Diagnostic scan identified multiple transmission-related codes including P0137, P0700, P2096, P1867, P0867, P2723, and P0841
Subaru filings that name P0137
Source: NHTSA manufacturer communicationsBulletins and campaigns Subaru filed with NHTSA whose summary names P0137. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- 09-115-24 Service bulletin2024-05-14 · Engine
- This bulletin announces the availability of new oxygen sensors developed to address the following Diagnostic Trouble Codes (DTCs); 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 Activity Detected Bank 1 Sensor 2), and P0141 (O2 Sensor Heater Circuit Bank 1 Sensor 2).
- 09-115-24R Service bulletin2025-04-22 · Electrical System
- "This bulletin announces the availability of new oxygen sensors developed to address the following Diagnostic Trouble Codes (DTCs) detected by the Engine Control Module: • 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 Activity Detected Bank 1 Sensor 2 • P0141: O2 Sensor Heater Circuit Bank 1 Sensor 2"
- 11-169-16 Service bulletin2016-11-10 · Engine And Engine Cooling — Engine — Gasoline — Turbo/Supercharger
- Turbo models only. This bulletin announces the availability of reprogramming files to optimize the ECM. These new files will address customer concerns of: ? Spark knock (ping) during high intake air temperature operation ? Surge on acceleration due to phantom knock detection ? Check Engine light illumination resulting from DTC P2270 and / or DTC P2270 and / or P0137 being stored in the ECM me
- 11-169-16R Service bulletin2019-02-20 · Engine
- This bulletin announces the availability of reprogramming files to optimize the ECM. These new files will address customer concerns of: ? Spark knock (ping) during high intake air temperature operation ? Surge on acceleration due to phantom knock detection ? Check Engine light illumination resulting from DTC P113A and / or P0137 being stored in the ECM memory.
What P0137 means
Source: SAE J2012 / OBD-IIDownstream bank 1 oxygen sensor reading stuck low.
A stored code names the test that failed, never the part that caused it. The record above is what Subaru and its owners have filed about it; the code’s page across every make has the whole file.
Common questions
Source: NHTSA files and the OBD-II standardIs P0137 a known problem on Subaru vehicles?
It is a documented one: NHTSA's files hold 70 manufacturer filings and 1 owner report naming P0137 on 36 Subaru model years (2016–2024). Whether it is a problem on one particular car is a diagnosis, not a count — but a bulletin that names the code on your model year is the place to start.
Which Subaru models does P0137 appear on most?
2023 BRZ (2 documents), 2022 BRZ (2 documents), 2024 Crosstrek (2 documents).
Does P0137 on a Subaru mean it is recalled?
No. Recalls are filed by campaign and matched by VIN; no recall is triggered by a scan tool. Check the VIN at nhtsa.gov/recalls, or open the model year's page here for the campaigns filed against it.