2022 Crosstrek CVT Shudder and P0700 Code

ClearTheCode admin answer: The P0700 code on your 2022 Subaru Crosstrek Limited indicates that the Transmission Control Module (TCM) has detected a fault within the transmission system and has illuminated the Check Engine Light. This code is a generic indicator and usually means there are more specific, manufacturer-defined transmission codes stored in the TCM that a standard OBD-II scanner cannot read.

Here's what you need to know and do:

1. P0700 is a 'Request' Code: It tells the engine's ECU to turn on the CEL because the TCM has an issue. To get to the root cause, you need a more advanced scanner (like those used by dealerships or specialized transmission shops) that can communicate directly with the TCM and read the specific 'P' codes (e.g., P2764, P0741) that detail the actual transmission problem.
2. CVT Shudder Concerns: The shudder you're experiencing is a critical symptom. It could be related to several internal CVT components, such as:
   • Torque Converter Lock-Up Clutch: A common cause of shudder, especially at lower speeds or during light acceleration.
   • CVT Fluid Degradation/Level: Incorrect fluid level or degraded fluid can impact performance. Subaru CVTs require specific fluid and precise levels.
   • Valve Body Issues: Problems with the transmission's valve body can affect fluid pressure and component engagement.
   • Internal Belt/Pulley Wear: While less common in newer vehicles, excessive wear can lead to slipping and shudder.

When to see a shop: Given the P0700 code and the noticeable shudder, it is imperative that you have your 2022 Subaru Crosstrek inspected by a Subaru dealership or a reputable transmission specialist as soon as possible. Continuing to drive with these symptoms could lead to further, more severe transmission damage. They will have the necessary diagnostic tools to read the specific TCM codes and accurately diagnose the internal CVT issue. Do not attempt to clear the code and continue driving without professional diagnosis.