DTC P0965: Pressure Control Solenoid "B" Control Circuit Range/Performance: Notes

WARNING: This page is about a different car, the 2022 Subaru WRX. However, it is still accessible from the selected car via links, so may be relevant.

1. -

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

Engine speed increases abruptly, and cannot accelerate.
Excessive slippage is felt.

Wiring diagram:

CVT control system Ref. to WIRING SYSTEM>CVT CONTROL SYSTEM>WIRING DIAGRAM

Courtesy of SUBARU OF AMERICA, INC.

CAUTION:

Use CHECK BOARD when measuring the TCM terminal voltage and resistance.
After servicing or replacing faulty parts, perform the last step of the basic diagnostic procedure. Ref. to TRANSMISSION (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE

CHECK DTC .
Read the DTC of [Transmission] using the Subaru Select Monitor. Ref. to TRANSMISSION (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC)

Besides DTC P0965, is DTC P0720, P0966, P0967, or P2751 displayed?

Yes : Perform the diagnosis according to DTCs other than P0965. Ref. to TRANSMISSION (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC)>LIST

No : Go to 2.
CHECK F & R SOLENOID (ACTIVE TEST) .
1. Turn the ignition switch to ON.
2. Using the Subaru Select Monitor, perform the active test for F & R solenoid. Ref. to TRANSMISSION (DIAGNOSTICS)>ACTIVE TEST
Is 300 → 500 → 700 mA indicated at the active test, and does [Actual Forward & Reverse Linear Solenoid Current] follow [Commanded Forward & Reverse Linear Solenoid Current]?

Yes : Go to 3.

No : Go to 4.
CHECK FOR POOR CONTACT .
Check for poor contact of harness and connector between TCM and F & R solenoid.

Is there poor contact?

Yes : Repair the poor contact of harness and connector.

No : Recheck the poor contact of harness and connector. Replace the TCM if no fault is found. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>TRANSMISSION CONTROL MODULE (TCM)
CHECK F & R SOLENOID .
1. Turn the ignition switch to OFF.
2. Disconnect the transmission connector.
3. Measure the resistance between transmission connector and transmission body.
  Connector & terminal
  
  (T1) No. 12 - Transmission body:
Is the resistance approximately 3.5 - 7.1 Ω? (When cold)

Yes : Replace the control valve body. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>CONTROL VALVE BODY

No : Repair or replace the harness.