Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2020 Subaru Ascent BaseFACTORY OEM SERVICE PROCEDURE
Inspection Mode D
| DTC | Item | Condition |
|---|---|---|
| P0713 | TRANSMISSION FLUID TEMPERATURE SENSOR "A" CIRCUIT HIGH | - |
| P0730 | INCORRECT GEAR RATIO | - |
| P0751 | SHIFT SOLENOID "A" PERFORMANCE/STUCK OFF | Perform inspection mode D twice |
| P0752 | SHIFT SOLENOID "A" STUCK ON | Perform inspection mode D twice |
| P0756 | SHIFT SOLENOID "B" PERFORMANCE/STUCK OFF | Perform inspection mode D twice |
| P0757 | SHIFT SOLENOID "B" STUCK ON | Perform inspection mode D twice |
| P0776 | PRESSURE CONTROL SOLENOID "B" PERFORMANCE/STUCK OFF | Perform inspection mode D twice |
| P0867 | TRANSMISSION FLUID PRESSURE | - |
| P1867 | TRANSMISSION SECONDARY FLUID PRESSURE | - |
| P2715 | PRESSURE CONTROL SOLENOID "D" STUCK ON | Perform inspection mode D twice |
| P2757 | TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID CONTROL CIRCUIT PERFORMANCE/STUCK OFF | Perform inspection mode D twice |
| P2758 | TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID CONTROL CIRCUIT STUCK ON | Perform inspection mode D twice |
Diagnostic procedure:
- Check the readiness code using Subaru Select Monitor and confirm that the diagnosis is not completed.
- Start the engine.
- Drive in any driving pattern for 20 minutes. (Include driving at a constant legal speed (for 20 seconds) at least once.)
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.