This problem is usually and electrical problem, open or short circuit between TCM and ECM.
Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
The cost to diagnose the P1711 Subaru code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.
The Transmission Control Module (TCM) sends a Torque Control Signal to the Engine Control Module (ECM). The P1711 code is set when the signal received by the the ECM it's not what is expected.
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