The CVT in your 2020 Rogue shouldn't whine loudly or slip during acceleration. When combined with a P0746 code pointing to the pressure control solenoid, you're looking at a hydraulic control problem that's preventing the transmission from maintaining proper belt grip.
What P0746 Indicates
The P0746 code means "Pressure Control Solenoid A Performance or Stuck Off." This solenoid regulates hydraulic pressure within the CVT. When it malfunctions, the transmission can't maintain the pressure needed to keep the belt from slipping on the pulleys.
How CVT Slipping Feels
- Engine RPMs climb but vehicle speed doesn't match
- Feeling of the engine revving freely without acceleration
- Momentary hesitation followed by sudden engagement
- Shuddering or vibration during acceleration
- Unusual whining that changes with speed
Why the Whining Sound?
CVT whining typically comes from:
- Belt slippage: The belt contacting pulleys without proper grip
- Bearing wear: Internal bearings developing play
- Pump strain: The hydraulic pump working harder to maintain pressure
- Low fluid: Inadequate lubrication creating noise
Common Causes of P0746
- Failed solenoid: The pressure control solenoid has failed electrically or mechanically
- Wiring issue: Damaged wires or connector to the solenoid
- Contaminated fluid: Debris affecting solenoid operation
- Internal CVT wear: Debris from wear clogging the solenoid
- TCM issue: Rarely, the transmission control module has faults
Diagnostic Approach
- Check CVT fluid level and condition
- Scan for additional transmission codes
- Test solenoid electrical function
- Inspect fluid for debris or burnt smell
- Have line pressure tested professionally
Repair Options and Costs
- CVT fluid service: $200-$400 (may help if caught early)
- Solenoid replacement: $500-$1,200
- Valve body replacement: $1,000-$2,500
- CVT rebuild: $2,500-$4,500
- CVT replacement: $3,500-$6,500
Nissan has extended CVT warranty on some models. Check with your dealer for applicable coverage.