10/27/2026
Diagnosis today on this 2017 Subaru Outback. The customer came to us with a check engine light, and the code stored was P0971 (Pressure Control Solenoid C Control Circuit High).
There are a couple of things worth checking with a code like this, but we know what it typically points back to: the pressure control solenoid "C" inside the valve body. Over time, the internal electrical coil can degrade or burn out, causing resistance to drift out of spec like we saw.
Spec should read between 2-4 ohms. We tested and found 37 ohms, which is confirmation the part has failed.
Subaru's official fix is replacing the entire valve body, but in today's economy, that's just not realistic for a lot of people. So we're going to track down an aftermarket solenoid to fix the actual issue and save her as much money as possible.
Stay tuned for the repair.