Error P0720 on Nissan X-Trail is one of the most common problems associated with automatic transmissions. This code indicates a fault in the circuit output shaft speed sensor (Output Speed Sensor, OSS), which is responsible for transmitting data on the speed of rotation of the automatic transmission secondary shaft to the control unit. If your X-Trail (regardless of generation - T30, T31 or T32) produces this error, it cannot be ignored: the consequences can vary from jerks when changing gears to complete transmission failure.

In this article we will look in detail at:

  • 🔍 What does P0720 mean? and how it manifests itself in practice (symptoms).
  • 🛠️ Main reasons the occurrence of an error - from trivial contamination of the sensor to serious problems with the automatic transmission.
  • 🔧 Step-by-step diagnostics using a scanner and multimeter (instructions for beginners and experienced car owners).
  • 💰 Repair cost in service vs. self-removal - which is more profitable?

We will pay special attention unique nuances Nissan X-Trail with variator Jatco JF011E/JF016E and classic automatic transmission RE0F10A/RE0F10Dwhere P0720 is often accompanied by errors P0715 (input speed sensor) or P0730 (wrong gear ratio).

What is the P0720 code and how does it manifest itself?

Code P0720 stands for "Output Speed Sensor Circuit Malfunction" - Malfunction of the output shaft speed sensor circuit. This sensor is located on the automatic transmission housing and transmits data on the speed of rotation of the secondary shaft to TCM (transmission control unit). If the signal is missing or distorted, the electronic brain of the box cannot correctly calculate the moment of gear shifting, which leads to:

  • ⚠️ Jerks and pushes when accelerating or braking.
  • 🚗 Stuck in one gear (usually 2nd or 3rd).
  • 🔄 Switching delays (especially noticeable when cold).
  • 🚨 Automatic transmission emergency mode (Check Engine and/or transmission icon lights up on the dashboard).

On Nissan X-Trail with variator CVT error P0720 often accompanied vibrations at a speed of 60–80 km/h and belt slippage under sudden acceleration. In classic automatic transmissions (RE0F10A) can be observed Shock shifting or the selector lever is completely locked in position P.

⚠️ Attention: If P0720 appears along with P0705 (selector lever position sensor circuit malfunction), this may indicate problems with the wiring or the TCM itself. In this case, a comprehensive diagnosis is required!

Causes of P0720 on Nissan X-Trail

Error P0720 never occurs on its own - it is provoked by specific malfunctions. Below is a list of the most likely causes, ranked by frequency of occurrence on X-Trail different generations:

Reason Frequency (%) Symptoms Difficulty in eliminating
Contamination or failure of the OSS sensor 45% Periodic occurrence of errors, jerks when switching Low (sensor replacement)
Damage to the wiring or sensor connector 30% The error appears after off-road driving or washing Medium (checking contacts, soldering)
TCM control unit malfunction 15% Multiple errors (P0720 + P0715 + P0730), transmission in emergency mode High (TCM flashing or replacement)
Mechanical wear of the sensor gear on the automatic transmission shaft 8% Constant error, noise from box High (automatic transmission disassembly)
Body/engine weight problems 2% The error appears when you turn on the headlights or air conditioning Low (cleaning ground contacts)

On Nissan X-Trail T31 (2007–2013) most often to blame OSS sensor connector, which oxidizes over time due to moisture. B T32 (2013–2021) the problem often lies in TCM firmware — after updating the software, the error may disappear.

📊 How often do you get the P0720 code?
  • Regularly (every day)
  • Periodically (once a week)
  • Rarely (once a month)
  • Only after washing or off-road

Diagnosing error P0720: step-by-step instructions

To pinpoint the cause P0720, will be required diagnostic scanner (For example, Launch X431 or Autel MaxiCOM) and multimeter. Below is an algorithm of actions for self-checking:

  1. Count errors. Connect the scanner to the connector OBD-II and write down all trouble codes. If in addition P0720 There is P0715 or P0730, the problem is most likely in the TCM or wiring.
  2. Clear errors. Clear the codes and drive 5-10 km. If P0720 appears again - go to the next step.
  3. Check OSS sensor.
    • 🔧 Disconnect the sensor connector (located on the automatic transmission housing on the right drive shaft side).
    • 🔍 Inspect the contacts for oxidation or damage.
    • 📊 Measure the resistance of the sensor with a multimeter (norm: 800–1400 Ohms at 20°C).
  • Check wiring. Check the circuit from the sensor to the TCM for an open or short circuit. Pay attention to the wiring harness left side member — the insulation there is often frayed.

    • ☑️ Preparing for P0720 diagnostics

    Done: 0 / 4

    If the sensor and wiring are ok, but the error remains, check:

    • 🔄 Gear on the output shaft of the automatic transmission — its teeth could wear out (disassembly of the box is required).
    • 🖥️ TCM firmware - on X-Trail T32 After the 2017 release, flashing to the latest version of the software often helps.
    • 🔋 On-board voltage - if it is below 11.5 V, the TCM may generate false errors.
    ⚠️ Attention: On CVTs Jatco When diagnosing P0720, be sure to check the oil level and condition! If the liquid turns black or smells like burning, the sensor could fail due to overheating of the box.

    How to resolve error P0720: from simple to complex

    The repair method depends on the cause of the problem. Let's consider options from the most budgetary to the capital-intensive:

    1. Cleaning or replacing the OSS sensor

    If the sensor is contaminated with metal shavings or its resistance does not meet the standard, it is sufficient:

    • 🧹 Clear sensor gasoline or alcohol (do not use acetone!).
    • 🔄 Check the gap between the sensor and the gear (should be 0.5–1.5 mm).
    • 🛒 Replace the sensor with a new one (part number for X-Trail T31: 32535-31X00 or 32535-31X01).

    Cost of a new sensor: from 1,500 to 3,500 rubles. Replacement takes 30–60 minutes.

    2. Wiring repair

    If the problem is an open or short circuit:

    • 🔧 Strip and insulate damaged wires.
    • 🔌 Replace the sensor connector (article: 28465-3M200).
    • 🔗 Check the “ground” on the body next to the automatic transmission - the contact often oxidizes.

    3. Flashing or replacing the TCM

    If the error is caused by a software glitch:

    • 🖥️ Update the TCM firmware through a dealer scanner (service cost: 3,000–5,000 rubles).
    • 🔄 As a last resort, replace the control unit (price: 15,000–30,000 rubles).
    💡

    Before replacing the OSS sensor, be sure to reset the automatic transmission adaptations via a scanner! This will help avoid jerks after repairs.

    4. Automatic transmission repair

    If the problem is in the mechanical part (wear of the shaft gear or bearings), disassembling the box will be required. Average repair cost:

    • 🔧 Replacement of sensor gear: 8,000–12,000 rubles.
    • 🛠️ Automatic transmission overhaul: 40,000–80,000 rubles.
    💡

    In 80% of cases, error P0720 on Nissan X-Trail is resolved by replacing the OSS sensor or repairing the wiring. Overhaul of the automatic transmission is required only in case of mechanical damage.

    Cost of repairs in service vs. self-removal

    Prices for diagnostics and repairs P0720 vary depending on the region and type of service station. Below is an indicative price list for Moscow and the regions:

    Type of work Cost (Moscow) Cost (regions) Lead time
    Diagnostics with a scanner 1 000–1 500 ₽ 500–1 000 ₽ 30 minutes
    Replacing the OSS sensor 2 500–4 000 ₽ 1 500–2 500 ₽ 1 hour
    Wiring repair 3 000–5 000 ₽ 2 000–3 500 ₽ 2–3 hours
    TCM flashing 4 000–6 000 ₽ 3 000–4 500 ₽ 1.5 hours
    Automatic transmission overhaul 50 000–90 000 ₽ 40 000–70 000 ₽ 2–3 days

    Do-it-yourself repairs will be cheaper, but require skills:

    • 🛠️ Replacing the OSS sensor — savings up to 2,000 ₽.
    • 🔧 Cleaning contacts - free (you only need WD-40 and brush).
    • 🖥️ TCM flashing - impossible without special equipment.

    If you are not confident in your abilities, it is better to turn to professionals. Errors during automatic transmission repair can lead to complete failure of the box!

    Preventing error P0720 on Nissan X-Trail

    To avoid reappearance P0720, follow these guidelines:

    • 🔄 Check the automatic transmission oil level regularly (every 10,000 km). For CVTs Jatco use only NS-2 or NS-3.
    • 🚿 Avoid pressure washing in the area of the OSS sensor connector.
    • 🔌 Process contacts special lubricant (for example, Liqui Moly Electronic-Spray).
    • 📊 Reset automatic transmission adaptations after changing the oil or sensors (via scanner).
    What happens if you ignore P0720?

    Driving for a long time with this error leads to accelerated wear of the clutches and solenoids of the automatic transmission. In CVTs, it is possible for the belt to slip and overheat, which can lead to the need to replace the gearbox (cost - from 150,000 ₽).

    On Nissan X-Trail T32 with variator JF016E It is recommended to carry out every 60,000 km diagnostics with a scanner for errors P0720, P0715 And P0776 (pressure in the valve body). This will help identify problems at an early stage.

    FAQ: Frequently asked questions about error P0720

    Is it possible to drive with P0720?

    Short-term - yes, but no more than 1-2 days. Long-term driving in emergency mode of the automatic transmission leads to increased wear of clutches and solenoids. On CVTs Jatco the risk of overheating and belt slippage increases 3 times.

    How to reset P0720 without a scan tool?

    You can disconnect the battery terminal for 10-15 minutes, but this will reset all automatic transmission adaptations, which can cause jerking when switching. It is better to use a scanner or contact a service center.

    Why does P0720 appear after washing?

    Most likely, water has entered the OSS sensor connector or the TCM contacts. It is necessary to dry the connectors with a hairdryer and treat WD-40. If the error remains, check the circuit for a short circuit.

    What oil should I fill in the X-Trail automatic transmission with error P0720?

    For classic automatic transmissions (RE0F10A) — Nissan Matic Fluid D. For CVTs (JF011E/JF016E) — Nissan CVT Fluid NS-2 (until 2012) or NS-3 (after 2012). Changing the oil can temporarily eliminate the error if it is caused by contamination of the valve body.

    Where is the OSS sensor located on the Nissan X-Trail?

    On all generations X-Trail The sensor is located on the side of the automatic transmission housing right drive shaft (if you look in the direction of travel). On CVTs it is attached to the torque converter housing, on classic automatic transmissions it is attached to the gearbox housing.