Error P0745 on Nissan: why it occurs and how to fix a malfunction in the pressure in the torque converter lock-up solenoid

Error P0745 on the dashboard Nissan - signal about problems with torque converter lock-up pressure solenoid (Pressure Control Solenoid "A"). This malfunction is typical for models with automatic transmission. RE0F10A, RE0F11A or CVTs JF011E/JF016E, where electronic transmission control plays a key role. Drivers often experience jerks when shifting gears, delayed response to the gas pedal, or even the automatic transmission going into “emergency mode.”

In this article we will look at unique features of error P0745 specifically for Nissan vehicles - from Qashqai J10/J11 to X-Trail T31/T32 And Navara D40. You'll learn how to distinguish a bad solenoid from a wiring or control unit problem, what tools you'll need to diagnose it, and why ignoring this error can lead to gearbox failure already after 500–1000 km.

What does error P0745 mean on Nissan: code decoding

Code P0745 in the diagnostic system OBD-II stands for Pressure Control Solenoid "A" Malfunction — malfunction of the pressure control solenoid “A”. In transmissions Nissan this solenoid is responsible for:

• 🔧 Torque converter lock (Lock-Up) - a mechanism that rigidly connects the engine and gearbox at high speeds to save fuel.
• ⚙️ Adjusting oil pressure in the automatic transmission valve body, which affects the smoothness of shifts.
• ⚡ Electronic control through signals from TCM (Transmission Control Module).

In practice, the error manifests itself differently depending on the model:

Model Nissan	Gearbox type	Symptoms of P0745
Qashqai J10 (2007–2013)	RE0F10A (automatic transmission)	Jerks during acceleration, “Check Engine” lights up, transmission “kicks” in 2nd–3rd gear
X-Trail T31 (2007–2014)	RE0F11A	Switching delay, slipping at start, error appears after warming up
Navara D40 (2005–2015)	RE5R05A	Vibrations at speeds of 60–80 km/h, the transmission goes into emergency mode
Juke F15 (2010–2019)	JF011E (variator)	Loss of traction, rubbery throttle response, error accompanied by P0776

Important: on CVTs Nissan (For example, JF016E in Murano Z51) code P0745 is often confused with a malfunction variator belt or oil pump. However, the solenoid here controls the pressure in the valve body, and its jamming leads to pulley slippage.

Causes of P0745: From Solenoid to Oil

In 70% of cases, the solenoid itself is to blame, but the problem may lie deeper. Let's consider all possible reasons, ranked by frequency:

1. Pressure solenoid malfunction (wear, jamming, winding breakage). On Nissan solenoids often fail after 150–200 thousand km due to oil overheating or manufacturing defects (relevant for boxes RE0F10A until 2012).
2. Contaminated or old ATF oil. In CVTs JF011E The oil loses its properties after 60 thousand km, and in automatic transmission RE0F11A — after 90 thousand km. Critical contamination of the oil with wear products of solenoids accelerates their failure by 3–5 times.
3. Problems with wiring or connectors. Oxidation of contacts on the solenoid or open circuit between TCM and solenoid (often after washing the engine or an accident).
4. TCM control unit malfunction. B Nissan Qashqai J11 And X-Trail T32 after 2014, the TCM may fail due to firmware or overheating.
5. Mechanical wear of the valve body. On runs over 200 thousand km, the valve body channels become clogged with metal shavings, which blocks the operation of the solenoid.

Feature Nissan: in CVTs JF015E/JF016E (installed on Murano, Pathfinder) error P0745 is often accompanied by a code P0776 (Solenoid “B” malfunction). This is because both solenoids are controlled by the same connector and there is a problem with the wiring or TCM affects them simultaneously.

How to Diagnose Error P0745: Step-by-Step Instructions

For an accurate diagnosis you will need:

• 🔧 Scanner OBD-II (For example, Launch CReader or ELM327 with protocol support CAN).
• 🔍 Multimeter to check solenoid resistance.
• 🛠️ A set of socket wrenches for removing the automatic transmission pan.
• 📊 Program for reading parameters TCM (For example, Nissan DataScan).

Step 1: Read errors with scanner.

Connect the scanner and check for related codes:

• P0730 - incorrect gear ratio (indicates mechanical problems).
• P0740 — general malfunction of the torque converter locking.
• P0776 — malfunction of solenoid “B” (often paired with P0745).

If there are no errors, the problem may be in the wiring or TCM.

Step 2: Check Solenoid Resistance.

Remove the connector from the solenoid (located on the valve body under the automatic transmission pan) and measure the resistance between the contacts:

• Norm for Nissan: 10–15 Ohm (for solenoids RE0F10A/RE0F11A).
• If resistance 0 ohm - winding breakage, if infinity - short circuit.

Step 3: Check transmission oil pressure.

To do this, you will need a pressure gauge and an adapter for connecting to the automatic transmission test port (for the location of the port, see the manual for your model). Normal pressure with engine running:

• RE0F10A: 2.5–4.5 bar at idle, 5–7 bar under load.
• JF011E (variator): 4.0–6.0 bar constantly.

If the pressure is below normal, the problem is in the solenoid or oil pump.

How to fix P0745: repair or replace?

Depending on the cause, solutions can range from a simple oil change to valve body repair. Let's consider all the options:

1. Replacing the pressure solenoid

If the solenoid is faulty (broken, jammed), it must be replaced. For Nissan fit original parts:

• RE0F10A/RE0F11A: solenoid 31397-31X00 or 31397-31X01 (depending on the year).
• JF011E/JF016E (variator): solenoid 31726-1XF00.

Original cost: 3 000–8 000 ₽. Analogs (for example, Aisin or ZF) are cheaper, but less reliable.

Replacement process:

1. Drain the automatic transmission oil.
2. Remove the pan and filter.
3. Disconnect the valve body connector and remove the faulty solenoid.
4. Install the new solenoid and reassemble everything in reverse order.
5. Fill in new oil (see the manual for volume).

2. Cleaning the valve body and changing the oil

If the oil is dirty or deposits are found in the valve body, flushing will be required. To do this:

• Remove the hydraulic unit and wash it special liquid (For example, Liqui Moly ATF Reiniger).
• Blow out the channels with compressed air.
• Replace the automatic transmission oil and filter (for CVTs Nissan use only NS-2 or NS-3).

What happens if you don’t change the automatic transmission oil with error P0745?

Neglecting to change the oil will lead to accelerated wear of the solenoids and valve body. In CVTs JF011E this causes the belt to slip and the pulleys to break after just 1,000–1,500 km. In automatic transmission RE0F10A contaminated oil blocks the valve body valves, which leads to breakdown of the box (repairs will cost 80,000–150,000 rubles).

3. Repair wiring or replace TCM

If the problem is in the wiring:

• Ring the chain from TCM to the solenoid (resistance should be 0 ohm).
• Clean the connector contacts (use contact lubricant type CRC 2-26).
• If there is a break in the harness, replace the damaged section.

If you're guilty TCM:

• Try clearing errors and reflash the unit (relevant for Qashqai J11 And X-Trail T32).
• If the unit is physically damaged (for example, after a short circuit), replacement will be required (the original is worth 20 000–40 000 ₽).

How much does a repair cost: prices and nuances

The cost of repair depends on the cause and model of the car. Approximate prices for Moscow/St. Petersburg (2026):

Type of repair	Cost (₽)	Notes
Diagnostics (scanner + solenoid check)	1 500–3 000	Includes error reading and resistance measurement
Solenoid replacement (1 pc.)	5 000–12 000	Cost of work + part (original)
ATF oil change + filter	4 000–8 000	For CVTs it is more expensive due to the larger oil volume
Cleaning the valve body	8 000–15 000	Includes disassembly and cleaning
Replacing the TCM (control unit)	20 000–40 000	Required for software failures or short circuits

Important: on Nissan Navara D40 And Pathfinder R51 with box RE5R05A repairs are more expensive due to the difficulty of accessing the valve body. In some cases it is cheaper to buy contract automatic transmission (from 50,000 ₽) with a guarantee.

Prevention of error P0745: how to avoid recurrence

To make your solenoids and automatic transmission last longer, follow these recommendations:

• 🔄 Change ATF oil every 60,000 km (for CVTs - every 40,000 km). Use only original oils:
  • Nissan Matic-S — for automatic transmission RE0F10A/RE0F11A.
  • Nissan NS-2/NS-3 - for CVTs JF011E/JF016E.
• 🚗 Avoid overheating the box:
  • Do not tow trailers weighing more than 1.5 tons (for Qashqai And X-Trail).
  • Don't keep your foot on the brake in traffic (this stresses the torque converter).
• ⚡ Check the wiring:
  • After washing the engine, blow out the connectors TCM compressed air.
  • Process contacts once a year contact lubricant.
• 🔧 Respond to symptoms promptly:
  • Jerky shifting is the first sign of problems with the solenoid.
  • The Check Engine light with code P0745 is a reason to immediately go for diagnostics.

On Nissan Juke And Note with CVTs JF015E it is especially important to monitor oil level. These boxes are sensitive to the slightest lack of ATF, which leads to belt slippage and solenoid wear.

Frequently asked questions about error P0745 on Nissan

Is it possible to drive with P0745?

Short-term - yes, but no more than 200–300 km. Driving for a long time with this error leads to:

• Accelerated wear of clutches and valve body in automatic transmission.
• Belt slipping in the variator (risk of breakage).
• Oil overheating and solenoids jamming.

On Nissan Qashqai J10 with box RE0F10A ignoring P0745 often ends breakdown of the planetary gear (repair ~120,000 ₽).

Why does P0745 appear after an oil change?

Reasons:

• Used non-original oil (for example, instead of Nissan Matic-S filled with universal ATF).
• Oil overfilled or underfilled (check the level using the dipstick on a heated box).
• When changing the oil the hydraulic unit was not washed, and dirt got into the solenoids.
• Defective oil filter (for example, a fake of the original).

Solution: drain the oil, flush the system, refill with original fluid.

Is it possible to reset the P0745 code without repair?

It is possible, but it will return within 10–50 km of run if the cause is not eliminated. Resetting the error only makes sense:

• After replacing the solenoid or oil (to check the result).
• If the error appears after deep battery discharge (sometimes settings get lost TCM).

To reset, use a scanner or disconnect the battery terminal for 10 minutes (on some models, for example, X-Trail T31, this resets adaptations TCM).

Which solenoids to install on Nissan: original or analogues?

Recommendations:

• Original (Nissan or Aisin) - more reliable, but more expensive (3,000–8,000 rubles).
• Analogues (ZF, Sachs, Febi) - cheaper (1,500–4,000 rubles), but the resource is 30–50% lower.
• Contract (used) - risky, since the solenoids are worn out.

On CVT JF011E (for example, in Juke or Note) it is better to install the original - analogues often cannot withstand the loads.

What should I do if the error remains after replacing the solenoid?

Possible reasons:

• Defective another solenoid (for example, "B" or "C").
• The problem is valve body (channels are clogged).
• Defective TCM control unit.
• Error in TCM firmware (relevant for Qashqai J11 2014–2017).

Solution: carry out full diagnostics with reading parameters TCM in real time (for example, oil pressure and solenoid signals).

If you are not confident in your abilities, contact specialists who work with Nissan. For example, in Moscow and St. Petersburg there are services specializing in automatic transmissions and CVTs Jatco (manufacturer of boxes for Nissan). Their diagnostic cost starts from 2,500 ₽, but this is cheaper than repairing the box after incorrect “self-medication”.