The JF011E transmission / RE0F10A transmission, sometimes known as the Jatco CVT or Nissan Xtronic CVT, is a continuously variable transmission then uses a band suspended between two pulleys that can adjust themselves to create the optimal gear ratio for performance or economy. This type of automatic transmission does provide a good balance between performance and fuel economy. However, JF011E valve body problems / RE0F10A valve body problems do still happen. So let’s take a look at the most common Nissan CVT valve body problems, and find out what you can do about them.
What Transmission Do I Have?
| Model |
|---|
| Nissan Altima |
| Trouble Code | Description |
|---|---|
| P0845 | Transmission Fluid Pressure Sensor/Switch B Circuit |
TSB NTB10–143a – Wind noise coming from CVT at highway speeds
2007 – 2009 Nissan Altima
Problem – One of the more common JF011E transmission problem occurs when a pronounced whining or grinding noise is heard from the transmission during acceleration and/or at highway speeds.
Solution – The most common cure for this problem is to replace the gears, oil pump and valve body.
TSB NTB14-002d – Reduced performance due to failsafe mode
2008-2013 Nissan Rogue
Problem – The vehicle’s speed and performance can be significantly reduced if the CVT goes into failsafe mode after driving at high engine RPMs and/or high-speed’s above 65 mph for 1 – 1.5 hours or more. A wind or rattling noise may also occur.
Solution – This problem may require the replacement of the entire transmission. However in some instances, replacing the JF011E control valve assembly/valve body can solve the problem.
RPM surge and/or chatter during acceleration | Slipping push belt and pulley fracture
Problem – A very common JF011E valve body problem in the RE0F10A transmission has to do with the loss and pressure control to the secondary pulley. When this occurs, the low pressure condition will cause a shattering sound during acceleration. It may also cause the push belt to slip and surface damage to the metal parts. The gear ratio may not change as well.
What Transmission Do I Have?
Solution – The secondary pulley control valve inside of the valve body is responsible for regulating the oil pressure in the secondary pulley circuit. In order to correct the problem, the valve bore may need to be resurfaced and a new secondary pulley installed.
