If on your dashboard Nissan Teana J32 the indicator came on Check Engine, and the scanner issues a code P0744 - this is a signal of problems with Torque Converter Lockup Clutch (TCC). The error is associated with incorrect operation of the transmission control system and can lead to jerking, loss of power, or even complete failure of the transmission. In this article we will look in detail at what it means P0744, which components may fail, and how to fix the problem yourself or with the help of a service.
Feature Teana J32 (2008–2013) with engines VQ25DE And VQ35DE lies in the sensitivity of electronic systems to the quality of oil in the automatic transmission and the condition of the solenoids. Error P0744 often appears after 150–200 thousand km, but can occur earlier - for example, due to poor quality maintenance or an aggressive driving style. It is important to understand that ignoring the problem can lead to overhaul of automatic transmission costing from 80,000 rubles, so it is better to carry out diagnostics and repairs as early as possible.
What does error P0744 mean on Nissan Teana J32
Code P0744 stands for «Torque Converter Clutch Circuit Intermittent» — intermittent malfunction in the torque converter clutch control circuit. Translated into practice, this means that the transmission control unit (TCM) detects an unstable signal from the solenoid responsible for locking the torque converter. The clutch should connect the engine and gearbox smoothly at high speeds (usually 60-80 km/h), but due to an error it does not.
On Nissan Teana J32 with RE0F10A (4-speed automatic transmission) or RE5R05A (5-speed automatic transmission) the error is manifested by the following symptoms:
- 🔴 Jerks or twitches when accelerating at speeds of 60–100 km/h.
- 🔴 Increased engine speed without increasing speed (“transmission slips”).
- 🔴 Lights up Check Engine with code P0744 (sometimes paired with P0730 or P0740).
- 🔴 Deterioration in acceleration dynamics and increased fuel consumption.
Note: on some versions Teana J32 The error may appear sporadically - for example, only during a cold start or after a long drive in traffic jams. This complicates diagnosis, since the fault is “floating”.
The main causes of P0744
Error P0744 does not have a single cause - it can be caused by both mechanical faults and problems with electrical or software. Below is a list of the most likely culprits:
| Reason | Probability, % | Verification method |
|---|---|---|
| Contaminated or old oil in the automatic transmission | 60% | Checking the color and smell of oil, analyzing for metal shavings |
| Torque converter lock-up solenoid malfunction | 25% | Solenoid resistance diagnostics (normal: 10–15 ohms) |
| Problems with TCM wiring or connectors | 10% | Visual inspection, continuity testing of circuits with a multimeter |
| Worn clutch or torque converter clutch | 5% | Automatic transmission disassembly or computer diagnostics |
The most common reason is contaminated oil. In automatic transmission Nissan Teana J32 It is recommended to use only original liquid Nissan Matic-S or its analogues (Idemitsu ATF Type-S, Ravenol ATF JWS 3309). If the oil has not been changed for more than 60,000 km, it loses its properties, clogs the solenoids and leads to an error. P0744.
- Every 40,000 km
- Every 60,000 km
- Only when problems arise
- Never changed
Diagnosing error P0744: step-by-step instructions
To pinpoint the cause P0744, a comprehensive diagnosis will be required. Start with the simplest checks and gradually move on to more complex ones:
- Reading error codes. Use a scanner (eg Launch X431 or ELM327) to check additional codes. If together with P0744 there is P0740 (clutch malfunction) or P0730 (wrong gear ratio), the problem is more likely mechanical.
- Checking the oil in the automatic transmission. The level should be between the marks
HOTon the dipstick (check on a warm box!). The color of the oil is red or light brown. If the fluid is dark with a burning smell, replacement is required. - Solenoid test. Measure the resistance of the lockout solenoid (normal: 10-15 ohms). If the readings are outside the limits, the solenoid must be replaced.
- Checking the wiring. Inspect the connectors for TCM (located under the center console) and solenoids. Oxidation or damage to the contacts may cause an intermittent signal.
For in-depth diagnostics it may be necessary oscilloscope - it will help identify voltage surges in the solenoid control circuit. If you do not have experience working with such equipment, it is better to contact a service center.
Download the repair manual for Nissan Teana J32|Purchase original ATF oil|Prepare a multimeter and scanner|Clean the TCM connectors from dirt-->
How to fix error code P0744: from simple to complex
The repair method depends on the cause of the problem. Below is an algorithm of actions from the most accessible solutions to major intervention.
1. Changing the automatic transmission oil
If the oil is dirty or the level is incorrect, start by replacing it. For Nissan Teana J32 you will need:
- 🔧 8–10 liters of oil
Nissan Matic-S(or equivalent). - 🔧 New automatic transmission filter (article:
31726-31X00for RE0F10A). - 🔧 Tray gasket (article:
31397-31X00).
Procedure:
- Drain the old oil through the plug in the pan.
- Remove the pan, replace the filter and gasket.
- Fill in new oil through the filler neck (check the level on a warm automatic transmission!).
After changing the oil, reset the automatic transmission adaptations using a scanner (procedure TCM Reset). This will help the control unit to “retrain” for new operating conditions.
2. Replacing the torque converter lock-up solenoid
If tests show a faulty solenoid, it must be replaced. For Teana J32 The original solenoid will do (31701-31X00) or an analogue from Aisin. Part cost: 3,000–5,000 rubles. To replace you will need:
- Remove the automatic transmission pan.
- Remove the valve plate (valve body).
- Replace the faulty solenoid (usually marked as
TCC Solenoid).
⚠️ Attention: When disassembling the valve plate, do not lose the small springs and balls! It is recommended to take photographs of each stage or use a repair kit with new seals.
3. Repair or replacement of the torque converter
If the problem is mechanical wear of the torque converter clutch, it will need to be repaired or replaced. Signs of wear:
- 🔊 Extraneous noise (grinding, vibration) when blocked.
- 🔊 Jerks even after changing the oil and solenoids.
The cost of a new torque converter for Teana J32: 25,000–40,000 rubles. An alternative is repair by a specialist (10,000–15,000 rubles).
Common repair mistakes and how to avoid them
Many owners Nissan Teana J32 encounter a relapse of the error P0744 after self-repair. Causes of personal errors:
- 🛑 Incomplete oil change. If you don't flush the system or leave old oil in the radiator, the contaminants will quickly return.
- 🛑 Use of non-original solenoids. Cheap analogues often fail after 10–20 thousand km.
- 🛑 Incorrect bolt tightening torque. Overtightened sump bolts can deform the automatic transmission housing.
To avoid problems:
- 🔧 Use only original spare parts or certified analogues.
- 🔧 After assembling the automatic transmission, be sure to
TCM Reset. - 🔧 Check the oil level on a warm box (ATF temperature should be 50–60°C).
If P0744 returns after replacing the solenoid, the problem may lie in the TCM itself. In this case, flashing or replacing the module is required.
Cost of repairs in service vs. do-it-yourself repair
Elimination prices P0744 services vary depending on the region and complexity of the work. Below is the approximate price for Nissan Teana J32:
| Type of work | Service cost, ₽ | Cost yourself, ₽ |
|---|---|---|
| Diagnostics (scanner + oil check) | 1 500–3 000 | 0 (if there is a scanner) |
| Automatic transmission oil change (partial) | 4 000–6 000 | 2,500–3,500 (oil + filter) |
| TCC Solenoid Replacement | 8 000–12 000 | 3,000–5,000 (detail) |
| Torque converter repair | 15 000–25 000 | 10,000–15,000 (spare parts) |
Do-it-yourself repairs are cheaper, but require skills and tools. For example, to replace solenoids you will need:
- 🔧 Set of sockets and keys.
- 🔧 Sealant for pallet (
Loctite 574). - 🔧 Multimeter to check resistance.
⚠️ Attention: If you are not confident in your abilities, do not take risks - improper repair of the automatic transmission can lead to its complete failure. In this case, the cost of restoration will increase to 100,000–150,000 rubles.
Prevention of error P0744 on Nissan Teana J32
To avoid reappearance P0744, follow the recommendations:
- 🔄 Change the automatic transmission oil every 40,000–60,000 km (even if the manufacturer specifies a larger interval!).
- 🔄 Use only original oil
Nissan Matic-Sor proven analogues. - 🔄 Avoid aggressive driving style (sharp acceleration and braking accelerate wear of friction clutches).
- 🔄 Check the oil level regularly (especially after long trips).
It is also recommended to carry out once a year computer diagnostics Automatic transmission, even if there are no obvious signs of malfunction. This will help identify problems at an early stage.
What should I do if P0744 appears after an oil change?
If the error returns immediately after changing the oil, the reasons may be as follows:
1. **Poor quality oil** - use only the original or certified analogues.
2. **Clogged automatic transmission radiator** - requires flushing or replacement.
3. **Unreset TCM Adaptations** - Reset via scanner.
4. **Wear of friction clutches** - even new oil will not save you if the torque converter clutch is worn out.
FAQ: Frequently asked questions about error P0744
Is it possible to drive with P0744?
Short term - yes, but not recommended. Long-term driving with a faulty torque converter clutch leads to overheating of the automatic transmission and accelerated wear of the clutches. If you ignore the problem, major repairs may be required after 5,000–10,000 km.
Will resetting the error through a scanner help?
Reset code P0744 without eliminating the cause it will give a temporary effect. The error will return after 10–100 km. A reset is only needed after a repair (eg solenoid replacement) to reset the TCM adaptations.
What kind of oil to pour into the Teana J32 automatic transmission?
Official recommendation - Nissan Matic-S (item: KLE52-00004). Alternatives:
Idemitsu ATF Type-SRavenol ATF JWS 3309Motul Multi ATF
How much does it cost to replace TCM on Teana J32?
The cost of a new control unit (TCM) - 30,000–50,000 rubles. A used module can be found for 10,000–15,000 rubles, but there is a risk of buying a faulty part. An alternative is flashing the old TCM (price: 5,000–8,000 rubles).
Could P0744 be caused by fuel?
No, error P0744 is not directly related to fuel quality. However, if the engine is unstable (for example, due to bad gasoline), this can indirectly affect the operation of the automatic transmission and cause errors. Check the transmission first.