Auto Solenoid Valve

The CVT gearbox model REOF10A Generally this gearbox is installed in Tianana, and there are more Qijun cars.

Nissan Teana, New Versa, Sunshine, Yida, Xuanyi, Qashai and other models are assembled with the same automatic change.

Speed box, that is, Nissan CVT gearbox, the model is different according to the displacement, the model is different according to the year:

REOF10A, REOF11A, REOF10D is the new model, the structure is very similar.

The valve body is critical in a gearbox. It is a control system, which is responsible for the internal oil pressure adjustment of the gearbox. If the oil pressure supply of the valve body is insufficient or the pressure is relieved, the gearbox will have problems. In addition, there are many electronic components on the valve body. Gearbox valve body. Plays the role of regulating the oil pressure of the oil circuit and filtering.

There are many manifestations of transmission solenoid valve failure, as follows:

1. The solenoid valve as the actuator of the hydraulic system, if there is a failure, it may lead to fluid can not normally flow into the transmission body, so that the accurate gear can not be pressurized, it will make the transmission can not downshift.

2. The electromagnetic valve body can realize the transformation of electrical signal to hydraulic signal, and pass it to the shifting part. Failure may not be able to transmit the shift signal normally, resulting in a shift delay or neutral situation.

3. Repeatedly switch between two different gears, there will be a block or refuse to shift the situation.

Frequently Asked Questions (FAQ)

1. What CVT transmission models does this auto solenoid valve fit?
This solenoid valve fits Nissan CVT gearbox models JF015E and RE0F11A (also known as REOF10A, REOF11A, and REOF10D). These transmissions are used in many Nissan cars.

2. Which Nissan vehicles use the JF015E / RE0F11A transmission?
Nissan Teana (Altima), Qijun (X‑Trail), Versa, Sunshine, Yida (Tiida), Xuanyi (Sylphy), and Qashqai (Rogue Sport). Model availability varies by market and year.

3. What is the function of the valve body and solenoid valves in a CVT transmission?
The valve body regulates oil pressure and distributes fluid to clutches and the steel belt. Solenoid valves are electro‑hydraulic actuators that receive electrical signals from the TCU and open/close oil passages. That action controls shifting and ratio changes.

4. What symptoms indicate a bad CVT solenoid valve?
Three common symptoms: (1) The transmission will not downshift when needed. (2) Shift delay (several seconds) or unexpected neutral engagement. (3) Jamming or refusal to shift when switching between two different gears/ratios.

5. What happens if the valve body has insufficient oil pressure?
If oil pressure supply is low or internal leakage occurs, clutches will slip, shifts will be harsh or delayed, and the steel belt may slip. Belt slippage can permanently damage the CVT, requiring a full transmission replacement. Correct solenoid function is essential for proper pressure regulation.

6. How does a solenoid valve failure cause a "no downshift" condition?
The solenoid valve acts as a hydraulic actuator. If it fails, fluid cannot flow into the transmission body as commanded. The target gear or ratio cannot build enough pressure. The transmission simply will not downshift when you decelerate or demand more power.

7. What causes a shift delay or neutral condition?
The solenoid valve converts electrical signals into hydraulic signals. If a solenoid fails, that conversion fails. The shift signal is not transmitted properly. You may experience a delay of several seconds before engagement, or the transmission may unexpectedly shift into neutral.

8. Does the auto solenoid valve for JF015E / RE0F11A come with a warranty?
Yes. Flying Bull provides a 1‑year warranty against manufacturing defects. Damage caused by contaminated fluid, incorrect installation, voltage outside specifications, or overpressure is not covered. Always use clean CVT fluid and follow proper replacement procedures.

9. Is this solenoid valve a direct replacement for the original Nissan part?
Yes. This valve is manufactured to replace the original solenoids in the JF015E and RE0F11A valve bodies. It matches the original dimensions, flow characteristics, and electrical specifications. Always verify your transmission model before ordering.

10. Can I replace just one solenoid valve, or should I replace all of them?
You can replace a single failed solenoid. However, if the transmission has high mileage and multiple solenoids of the same age, consider replacing all solenoids while the valve body is accessible. The labor is the same, and replacing all reduces the risk of another failure.

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