A whining CVT that's also slipping on your 2017 Nissan Rogue indicates significant transmission problems. Code P0746 relates to pressure control solenoid performance, suggesting the transmission is having difficulty maintaining proper hydraulic pressure for normal operation.
What CVT Whining Indicates
CVT whining that increases with speed often indicates belt wear or slippage, low fluid level reducing pump efficiency, worn or damaged pulleys, internal bearing wear, and pump struggling to maintain pressure. The whine differs from normal CVT operation sound - it's louder, more pronounced, and changes with acceleration.
Understanding P0746
Code P0746 indicates the pressure control solenoid A is stuck off or performing below expected parameters. This solenoid helps regulate line pressure in the CVT. Incorrect pressure causes slipping, harsh engagement, and can accelerate belt wear. The code may appear alongside CVT performance symptoms.
Slipping Symptoms
CVT slipping manifests as engine RPM rising without corresponding acceleration, feeling like the transmission is slipping between gears (though CVTs don't have traditional gears), delayed response when pressing the accelerator, and jerking or shuddering during acceleration. These symptoms often worsen over time.
Diagnostic Approach
Check CVT fluid level and condition - low or degraded fluid causes both whining and slipping. Ensure correct Nissan NS-3 fluid was used in any previous service. Scan for all transmission codes. Check if your VIN qualifies for extended CVT warranty coverage from Nissan.
Repair Considerations
Options range from solenoid replacement if pressure issues are isolated, to complete CVT replacement for severe internal damage. Given the cost of CVT repair ($3,000-5,000+), verify warranty status and consider vehicle value. Some owners opt for transmission repair specialists who rebuild CVTs at lower cost than dealer replacement.