Subaru CVT circuit-low versus circuit-high faults. See the manufacturer document, vehicle conditions, exclusions and questions for a qualified shop before assuming a repair.
This is a research summary of a manufacturer communication, not a diagnosis for your car, a DIY repair procedure or confirmation of warranty or recall eligibility. No qualified technician has approved a repair for your individual vehicle here.
This historical communication is conditional. The current revision, VIN/build eligibility, measured diagnosis and any warranty or recall decision are not established here. Ask the manufacturer or a qualified shop to check the complete current document.
Read the Subaru original: CVT solenoid circuit low/high diagnostic guidance · Check open recalls by VIN at NHTSA Source date: 2023-02-28; research checked: 2026-11-01.
What prompted this manufacturer document
- The bulletin groups CVT electrical faults into circuit-low and circuit-high cases, with different TCM-location diagnostic branches.
Which vehicle conditions must be checked
Each row below retains its own conditions. Do not combine engines, years or models across rows to create new applications. A listed model is not proof that a particular VIN is affected.
- Subaru Legacy / Outback · 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 · CVT
- Subaru Impreza · 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 · CVT
- Subaru Crosstrek · 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 · CVT
- Subaru Forester · 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 · CVT
- Subaru WRX · 2015, 2016, 2017, 2018, 2019, 2020 · CVT
- Subaru Ascent · 2019, 2020 · CVT
- CVT equipment and the correct TCM architecture are required.
- Low/high describes the monitored electrical circuit, not transmission-fluid quantity.
Codes recorded in this document
A root listed only as an appearance has no separately verified meaning here. Preserve every suffix and module name; a shared root does not transfer a repair branch to another vehicle.
| Root | Raw form | Meaning in this source, if established |
|---|---|---|
| P0962 | P0962 | CVT control/solenoid circuit-low fault group in this Subaru bulletin; exact circuit requires model-specific SI. |
| P0966 | P0966 | CVT control/solenoid circuit-low fault group in this Subaru bulletin; exact circuit requires model-specific SI. |
| P0970 | P0970 | CVT control/solenoid circuit-low fault group in this Subaru bulletin; exact circuit requires model-specific SI. |
| P0973 | P0973 | CVT control/solenoid circuit-low fault group in this Subaru bulletin; exact circuit requires model-specific SI. |
| P0976 | P0976 | CVT control/solenoid circuit-low fault group in this Subaru bulletin; exact circuit requires model-specific SI. |
| P2720 | P2720 | CVT control/solenoid circuit-low fault group in this Subaru bulletin; exact circuit requires model-specific SI. |
| P2729 | P2729 | CVT control/solenoid circuit-low fault group in this Subaru bulletin; exact circuit requires model-specific SI. |
| P2764 | P2764 | CVT control/solenoid circuit-low fault group in this Subaru bulletin; exact circuit requires model-specific SI. |
| P2769 | P2769 | CVT control/solenoid circuit-low fault group in this Subaru bulletin; exact circuit requires model-specific SI. |
| P0963 | P0963 | CVT control/solenoid circuit-high fault group in this Subaru bulletin; exact circuit requires model-specific SI. |
| P0967 | P0967 | CVT control/solenoid circuit-high fault group in this Subaru bulletin; exact circuit requires model-specific SI. |
| P0971 | P0971 | CVT control/solenoid circuit-high fault group in this Subaru bulletin; exact circuit requires model-specific SI. |
| P0974 | P0974 | CVT control/solenoid circuit-high fault group in this Subaru bulletin; exact circuit requires model-specific SI. |
| P0977 | P0977 | CVT control/solenoid circuit-high fault group in this Subaru bulletin; exact circuit requires model-specific SI. |
| P2721 | P2721 | CVT control/solenoid circuit-high fault group in this Subaru bulletin; exact circuit requires model-specific SI. |
| P2730 | P2730 | CVT control/solenoid circuit-high fault group in this Subaru bulletin; exact circuit requires model-specific SI. |
| P2763 | P2763 | CVT control/solenoid circuit-high fault group in this Subaru bulletin; exact circuit requires model-specific SI. |
| P2770 | P2770 | CVT control/solenoid circuit-high fault group in this Subaru bulletin; exact circuit requires model-specific SI. |
What an owner can record safely
- Save exact code suffixes and whether the issue occurs cold, warm or intermittently.
What the source does not prove
- Do not purchase a valve body from the low/high wording alone.
- A code or message alone does not establish a failed part, a safe-to-drive decision or an approved repair for this VIN.
- A service bulletin is not automatically a recall or free warranty repair. Confirm current eligibility directly.
Questions for the repair shop
- Which TCM-location group applies, and what circuit defect was measured?
- Does a later revision or a current recall change the source's original advice?
- What measurement or inspection confirms the cause, and how will the repair be verified?
Open source-review issue
- Q2-001: The source lists Crosstrek 2012–2020, but a 2012 US-market Crosstrek year has not been established here. Do not use that year as a verified US application.
The uncertain field is not used here to claim a current fitment, repair or market-wide failure.
Read the original record
The linked communication may be revised after the research date. Compare its document number, exact vehicle table, diagnostic preconditions and exclusions with a qualified technician. This page paraphrases selected facts and does not reproduce the manufacturer procedure.
Sources and scope
- Subaru — CVT solenoid circuit low/high diagnostic guidance (16-131-20R) Document: 2023-02-28 · Research checked: 2026-11-01
Research snapshot: 2026-11-01. Source documents may have newer revisions. Verify current instructions and VIN eligibility with the manufacturer.