If on your dashboard Nissan Murano the indicator came on Check Engine, and the scanner gives an error P0725 - this is a signal of problems with the gearbox input shaft rotation speed sensor. This malfunction can manifest itself in different ways: from jerking when changing gears to a complete refusal of the transmission to switch to higher speeds. In some cases, the car even goes into emergency mode, blocking shifting above 3rd gear.

Error P0725 is not critical for the engine, but cannot be ignored. Long-term driving with such a malfunction leads to increased wear of the gearbox, overheating of the oil and, ultimately, to expensive repairs. In this article we will look at what exactly is breaking, how to check the sensor yourself and what steps to take to fix the problem - from simply cleaning the contacts to replacing the unit.

What does P0725 mean on Nissan Murano?

Code P0725 stands for «Engine Speed Input Circuit Malfunction» — malfunction of the automatic transmission input shaft rotation speed sensor circuit. This sensor (sometimes called turbine speed sensor) transmits data to the transmission control unit (TCM) about the speed at which the input shaft of the box rotates. Based on this data TCM adjusts gear shift points, torque converter locking and other parameters.

On Nissan Murano (especially models Z50 And Z51 with engines VQ35DE or VQ25DE) This sensor is located on the gearbox housing on the oil pan side. It is an inductive or Hall sensor that reads pulses from a ring gear on a shaft. If the signal disappears or becomes unstable, ECU fixes an error P0725 and can activate the emergency mode of the transmission.

  • 🔧 The main symptoms of error P0725:
  • ⚠️ Jerks or delays when changing gears.
  • 🚗 The car “hangs” in one gear (usually 3rd).
  • 🔥 Lights up on the dashboard Check Engine and/or SLIP.
  • 📉 Power drop, especially during acceleration.

It is important to understand that P0725 It can be either an independent error or a consequence of other problems - for example, faulty wiring, oxidation of contacts, or even mechanical wear of the box. Therefore, diagnostics must be carried out comprehensively.

📊 How long have you had the P0725 code?
  • Less than a week
  • 1-2 weeks
  • More than a month
  • Appears periodically

Causes of error P0725

Error P0725 on Nissan Murano rarely occurs on its own - it is usually preceded by specific malfunctions. Here are the most common reasons:

  1. Malfunction of the input shaft speed sensor. Over time, the sensor wears out and its winding or electronic part fails. Mechanical damage is also possible (for example, after hitting the box pallet).
  2. Problems with wiring or connector. Oxidation of contacts, broken wires or short circuit in the sensor circuit are a common cause of false alarms.
  3. The sensor is contaminated with metal shavings. If there are a lot of wear products in the automatic transmission oil (for example, due to worn clutches), they can settle on the sensor and distort its readings.
  4. Malfunction of the transmission control unit (TCM). Less often, but it happens that the problem lies in the “brains” of the box, which incorrectly processes the sensor signal.
  5. Mechanical wear of the gearbox. If the gear ring from which the pulses are read is damaged on the shaft, the sensor will produce incorrect data.

According to service center statistics, in 60% of cases the sensor itself is to blame 30% - wiring or connector, and only in 10% — more serious problems (for example, wear of the automatic transmission). However, without diagnosis it is impossible to accurately determine the cause.

⚠️ Attention: If the error P0725 accompanied by knocking in the box or burning smell from automatic transmission oil, stop using the vehicle immediately! This may indicate critical wear of the clutches or bearings, and further driving will lead to breakage of the box.

How to Diagnose P0725 on a Nissan Murano

Diagnosis of the error P0725 requires a systematic approach. Start with the simplest checks and gradually move on to more complex ones. Here is a step-by-step algorithm:

1. Reading error codes

Use a diagnostic scanner (eg Launch CReader, Autel MaxiCOM or even an adapter ELM327 with the program Torque Pro) to read all saved errors. If in addition P0725 there are other codes (for example, P0730 - incorrect gear shifting or P0700 - transmission malfunction), this will help narrow down the search.

2. Visual inspection of the sensor and wiring

Input shaft speed sensor on Nissan Murano located on the automatic transmission housing and oil pan. To get to it:

Raise the car on a lift or drive it onto a viewing hole|

Disconnect the sensor connector and inspect the contacts for oxidation or damage|

Check the integrity of the wires from the sensor to the control unit |

Clean the sensor from dirt and metal shavings (use contact cleaner)|

Check the mounting of the sensor - it should not be loose -->

If there are signs of corrosion on the connector, clean the contacts with a special liquid (for example, CRC Contact Cleaner). Also make sure that the wires are not frayed or have exposed areas.

3. Checking the sensor resistance

For this you will need a multimeter. Disconnect the sensor connector and measure the resistance between its terminals. For Nissan Murano normal values are usually 200–900 Ohm (see the manual for your model for exact details). If resistance:

  • 🔴 0 ohm - short circuit inside the sensor.
  • 🔴 ∞ (infinity) - circuit break.
  • 🟢 Within normal limits — the sensor is working, the problem may be in the wiring or TCM.

4. Checking the sensor signal

Connect the multimeter in AC voltage measurement mode (AC 200mV) to the sensor terminals. Crank the engine with the starter (without starting it) - voltage pulses should appear on the screen (usually 0.1–0.5 V). If there is no signal, the sensor is faulty.

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If you don't have a multimeter, you can temporarily install a known-good sensor (for example, removed from another car or purchased new) and see if the error goes away.

5. Diagnostics of the transmission control unit

If the sensor and wiring are ok, but the error remains, the problem may be TCM. In this case you will need:

  • 🔧 Check the voltage at the connector TCM (must be 12 V on nutrition and 5 V on signal wires).
  • 🔧 Reset gearbox adaptations (sometimes it helps when the unit “freezes”).
  • 🔧 Reflash TCM (if there is a suspicion of a software failure).

For in-depth diagnostics TCM It is better to contact the service, as specialized equipment will be required (for example, Nissan Consult).

How to Troubleshoot P0725: Step-by-Step Instructions

Depending on the cause of the malfunction, repair methods will vary. Below are the most effective solutions for Nissan Murano.

1. Replacing the input shaft speed sensor

If diagnostics show that the sensor is faulty, it must be replaced. For Nissan Murano Original sensors with article numbers are suitable:

  • 🔧 32535-31X00 (for models up to 2007).
  • 🔧 32535-31X01 (for models after 2007).
  • 🔧 Analogues: Standard Motor Products SS150, Denso 555-1001.

Replacement process:

  1. Remove the negative terminal from the battery.
  2. Disconnect the sensor connector.
  3. Unscrew the sensor with a key 10 mm.
  4. Install the new sensor by first applying sealant to the threads (for example, Loctite 577).
  5. Connect the connector and check for errors with a scanner.
⚠️ Attention: When replacing the sensor, do not use metal tools to clean the seat - this may damage the ring gear on the shaft! Better blow with compressed air.

2. Repairing wiring or connector

If the problem is in the wiring:

  • 🔧 Strip and tin the exposed wires, insulate with heat shrink.
  • 🔧 Replace the damaged section of the wire (use wires of the same cross-section!).
  • 🔧 Treat the connector contacts with a special lubricant (for example, Liqui Moly Kontakt-Spray).

If the connector is heavily oxidized or melted, it is better to replace it entirely. Connector article number for Murano: 28461-31X00.

3. Cleaning the gearbox from metal shavings

If a lot of metal shavings are found in the automatic transmission oil, this may indicate wear on the clutches or bearings. In this case:

  1. Drain the old oil and wash the pan.
  2. Replace the automatic transmission filter (part number: 31726-31X00).
  3. Install a new sensor (if the old one is contaminated with chips).
  4. Add fresh oil (recommended Nissan Matic S or Idemitsu ATF Type-M).

If there are too many chips, you may need to box repair with replacement of worn parts.

4. Reset transmission adaptations

Sometimes it's a mistake P0725 occurs due to a failure of adaptations in the control unit. To reset them:

  1. Connect the diagnostic scanner.
  2. Go to section Transmission → Adaptations Reset.
  3. Perform a reset and reboot TCM (removing the battery terminal for 10 minutes).

After the reset, you need to “train” the box: drive 10–15 km in a gentle mode, avoiding sudden acceleration.

Cost of repairs and where is the best place to get them repaired

The cost of repair depends on the cause of the problem and the region. Here are the estimated prices for Nissan Murano:

Type of work Cost (RUB) Notes
Diagnosis of error P0725 1 500 – 3 000 Includes code reading and visual inspection
Replacing the Input Shaft Speed Sensor 3 000 – 6 000 Sensor cost: 2,500 – 4,500 rubles.
Wiring/connector repair 2 000 – 5 000 Depends on the extent of damage
Automatic transmission cleaning and oil change 8 000 – 15 000 Includes oil, filter, pan flush
TCM repair/replacement 15 000 – 30 000 Includes flashing or block replacement

Where is the best place to repair:

  • 🔧 Official dealer Nissan. Pros: warranty, original spare parts. Cons: high price (30–50% more expensive than independent services).
  • 🔧 Specialized service for automatic transmissions. Pros: Experience with transmissions, often cheaper than the dealer. Cons: original spare parts are not always used.
  • 🔧 Self-repair. Pros: saves money. Cons: risk of errors during diagnosis or replacement.
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If you are not confident in your abilities, it is better to entrust the repair to professionals. Incorrectly replacing the sensor or resetting adaptations can aggravate the problem!

Preventing error P0725 on Nissan Murano

To avoid the error reappearing P0725, follow these guidelines:

  • 🔧 Change the automatic transmission oil regularly. For Murano interval - every 60,000 km (or once every 4 years). Use only recommended fluids (Nissan Matic S, Idemitsu Type-M).
  • 🔧 Avoid overheating the box. Do not tow heavy trailers or race at traffic lights. In extreme heat, use an additional automatic transmission cooling radiator.
  • 🔧 Check the condition of the wiring. Periodically inspect the sensor connectors on the gearbox, clean them of dirt and oxidation.
  • 🔧 Respond to symptoms promptly. If there are jerks when switching or the Check Engine, do not delay diagnosis.

On Nissan Murano With a mileage of more than 150,000 km, error P0725 is often accompanied by wear of the automatic transmission solenoids. If the problem remains after replacing the sensor, check the pressure in the valve body - it should be in the range of 1.4–1.6 MPa at idle speed.

Frequently asked questions about error P0725 on Nissan Murano

Is it possible to drive with P0725?

Short term - yes, but not recommended. Driving for a long time with this error leads to:

  • ⚠️ Increased wear of automatic transmission clutches.
  • ⚠️ Overheating of the oil and accelerated degradation of its properties.
  • ⚠️ Risk of blocking the box in emergency mode at the most inopportune moment.

If the error appears on the way, get to the service center in a gentle mode (without sudden acceleration and high speeds).

Why does error P0725 appear after changing the automatic transmission oil?

This can happen for two reasons:

  1. When changing the oil, the seal of the sensor connector was broken (for example, liquid got on it).
  2. The new oil washed away deposits that previously “mask” a problem with the sensor or wiring.

Check the connector for dryness and reset the error again. If it returns, look deeper for the reason (perhaps the sensor was already faulty).

Could P0725 be caused by a faulty engine?

No, P0725 applies exclusively to the transmission. However, if the engine is unstable (for example, it stalls or stalls), this may indirectly affect the operation of the automatic transmission due to incorrect signals about the crankshaft speed. In this case, first fix the engine problems, then check the transmission errors.

Which speed sensor is better to choose for replacement: original or analogue?

Original sensors (32535-31X00 or 32535-31X01) more reliable, but more expensive (about 4,000 rubles). Analogues (Standard Motor Products SS150, Denso 555-1001) are cheaper (2,000–3,000 rubles), but may have a shorter resource. If you plan to drive the car for a long time, it is better to take the original. A high-quality analogue is also suitable for a temporary solution.

Is it necessary to adapt the box after replacing the sensor?

Yes, it is desirable. The sensor is working, the control unit (TCM) could “remember” incorrect data. After replacement:

  1. Clear errors with a scanner.
  2. Reset adaptations (if there is such a function in the diagnostic equipment).
  3. Drive 10–15 km in quiet mode so that the transmission “retrains”.

If after reading the article you still have questions about the specific situation with your Nissan Murano, check the details (year of manufacture, mileage, associated symptoms) - this will help give more accurate advice. Happy renovation!