2020 Subaru Forester BaseFACTORY OEM SERVICE PROCEDURE

Inspection Mode B

DTC Item Condition
P0711 TRANSMISSION FLUID TEMPERATURE SENSOR "A" CIRCUIT RANGE/PERFORMANCE -

Diagnostic procedure: 

  1. Start the engine under condition that ATF temperature is at 20°C (68°F) or below.
  2. Check the readiness code using Subaru Select Monitor and confirm that the diagnosis is not completed. Ref. to TRANSMISSION (DIAGNOSTICS)>ALL READINESS DIAGNOSTIC CODE(S) .
  3. Drive in any driving pattern for 20 minutes. (Include driving at a constant legal speed (for 20 seconds) at least once.)
    NOTE: Repeat two or more driving cycles in this driving pattern.
  4. Check the readiness code using Subaru Select Monitor, confirm that the diagnosis is completed, and end the procedure. Ref. to TRANSMISSION (DIAGNOSTICS)>ALL READINESS DIAGNOSTIC CODE(S) .
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

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.

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.