The P0746 code in your 2022 Subaru Forester indicates pressure control solenoid A is not performing within expected parameters in the Lineartronic CVT. This solenoid regulates hydraulic pressure critical for proper CVT operation.
CVT Pressure Control Function
In Subaru's CVT, pressure control solenoids regulate the clamping force on the belt pulleys. Proper pressure ensures efficient power transfer and prevents belt slip. Performance degradation affects fuel economy and transmission longevity.
Causes of P0746
- Degraded solenoid performance
- Contaminated CVT fluid
- Partial valve body blockage
- Weak solenoid return spring
- Electrical resistance changes
- Wear in solenoid valve
Performance Issue Symptoms
- CVT slipping sensation
- Delayed acceleration response
- Check engine light on
- Higher than normal RPM
- Reduced fuel economy
- CVT operating temperature elevated
Subaru CVT Fluid Requirements
The 2022 Forester requires Subaru CVT fluid. Degraded or incorrect fluid directly affects pressure solenoid performance. Subaru recommends CVT fluid replacement per the maintenance schedule.