<em>Nissan Almera G15</em>speed sensor: diagnostics, repair and replacement

Nissan Almera G15 — a popular sedan, known for its reliability and unpretentiousness. However, even with such machines, key components fail over time, and speed sensor - one of them. This small but important element is responsible for the correct operation of the speedometer, ABS system, cruise control and even affects fuel consumption. If you notice that the speedometer needle is twitching, the Check Engine, or the car began to “stupid” when accelerating - it may be his fault.

In this article we will analyze all signs of a faulty speed sensor on Almera G15, we’ll tell you how to check it with a multimeter, where it is located and how to replace it yourself. You will also find articles of original and analogue sensors, average prices for spare parts and service stations, and at the end - answers to frequently asked questions from owners. Information is valid for models 2013–2019 with engines HR15DE And HR16DE.

Signs of a malfunctioning speed sensor on a Nissan Almera G15

The speed sensor (DS) transmits data on wheel rotation to the ECU, speedometer and other systems. If it breaks, the symptoms can vary from harmless to critical. Here basic "signals"that it's time to check the DS:

• 🚗 Speedometer does not work or jerks — the arrow freezes at zero, jumps or shows incorrect values.
• ⚠️ Check Engine light on - error P0500 (no signal from speed sensor) or P0503 (intermittent signal).
• 🛑 ABS problems - the system may turn off or trigger for no reason.
• ⛽ Increased fuel consumption — The ECU does not receive speed data and goes into emergency mode.
• 🔄 Cruise control doesn't work — the system simply refuses to turn on.
• 🔥 Jerks when moving — especially noticeable at low speeds (1st–2nd gear).

Important: some symptoms (eg Check Engine) may also indicate other problems - a faulty speedometer cable, broken wiring or a malfunction in the computer. Therefore speed sensor diagnostics must be comprehensive.

⚠️ Attention! If on Almera G15 The speedometer and odometer do not work at the same time, and the ABS indicator is on - with a 90% probability the speed sensor is to blame. But if the problem is only in ABS, check hub sensors.

Where is the speed sensor located on the Nissan Almera G15?

On Almera G15 (as on most modern Nissan) speed sensor installed on the gearbox. The exact location depends on the type of gearbox:

• 🔧 Manual Transmission (MT) — the sensor is screwed into the upper part of the box body, closer to the right drive (if viewed in the direction of travel).
• 🔄 Automatic transmission (AT/CVT) — located on the back of the variator, next to the wiring connector.

To get to the DS you will need:

1. Drive the car onto a pit or a lift (you can use a jack, but this is less convenient).
2. Remove the engine protection (if equipped).
3. Disconnect the negative terminal from the battery (required!).
4. Locate the sensor along the wire going from the box to the ECU.

The photo below shows a typical location of the DS on Almera G15 with manual transmission:

Photo of the location of the speed sensor

The image shows a black plastic sensor housing with a connector screwed into the aluminum gearbox housing. A gray wire with a chip comes to it. Usually the DS is mounted on one bolt (10 wrench).

If you are not sure that you have found the right sensor, refer to marking: original DS for Almera G15 has a number 39420-4M000 or 39420-4M00A.

How to check the speed sensor on a Nissan Almera G15?

Before replacing the sensor, it must be diagnose. There are three main ways to check:

1. Visual inspection — check the integrity of the housing, connector and wiring. Often problems are caused by oxidized contacts or frayed wires.
2. Checking with a multimeter — resistance and voltage measurement.
3. Diagnostics with a scanner — reading errors via OBD-II.

Let's consider check with a multimeter more details. You will need:

• 🔧 Multimeter (in voltmeter/ohmmeter mode).
• 🔌 Two crocodile wires for connection.
• 📌 Pin or paper clip for piercing insulation.

Procedure:

1. Disconnect the connector from the sensor.
2. Set the multimeter to mode DC 20V (constant voltage).
3. Connect + probe to contact 1 (power, usually red wire), and − - to contact 3 (ground, black wire).
4. Turn on the ignition (without starting the engine). The voltage should be 12 V. If not, the problem is in the wiring or fuse.
5. Switch the multimeter to mode AC 200mV (alternating voltage).
6. Connect the probes to the contacts 2 (signal) and 3 (mass).
7. Spin the drive wheel (you can jack up the car). A working sensor should output pulse signal 0.5–10 V depending on the rotation speed.

If there is no signal or it is weak, the sensor is faulty. You can also measure resistance between contacts 2 And 3: for a working DS it should be within 50–200 Ohm.

Check the integrity of the wiring and connector|

Measure supply voltage (12V)|

Spin the wheel and check the pulse signal|

Measure the sensor resistance (50–200 Ohm) -->

⚠️ Attention! On Almera G15 with variator CVT The speed sensor is integrated into the transmission control unit. Replacing it requires reflashing the ECU, so it is better to contact a service station.

Articles and prices for speed sensor for Nissan Almera G15

If the diagnostics confirm a malfunction, the sensor must be replaced. For Almera G15 fit like original spare parts Nissan, as well as analogues from other manufacturers. Below is a table with current articles and average prices (for 2026):

Manufacturer	Article	Gearbox type	Price, ₽	Notes
Nissan (original)	39420-4M000	Manual transmission / automatic transmission	3 500–4 200	Best quality, 1 year warranty
Hitachi	DS-1005	Manual transmission	2 100–2 600	Japanese quality, compatible with Renault
Febi	22716	Manual transmission / automatic transmission	1 800–2 300	German brand, good price/quality ratio
Valeo	583058	Manual transmission	2 400–2 900	Suitable for Almera G15 And Renault Logan/Sandero
ERA	550466	Manual transmission	1 200–1 500	Budget option, resource ~50,000 km

Tip: if you buy non-original sensor, be sure to check it with the original according to:

• 🔍 Number of contacts (should be 3).
• 📏 Case size and shape (some analogues have a different thread diameter).
• 🔌 Connector type (on Almera G15 a chip with a latch is used).

The average cost of replacing a speed sensor at a service station is: 1 500–2 500 ₽ (excluding spare parts). If you decide to do it yourself, you will save on labor, but be prepared to have difficulty accessing the box.

Step-by-step instructions for replacing the speed sensor on a Nissan Almera G15

Replacing DS with Almera G15 - a task of medium complexity. If you have experience in car repairs, you can do it in 30–60 minutes. For beginners, it’s better to get help or watch video instructions. Here step-by-step algorithm:

Required tools:

• 🔧 Key for 10 (head or open-end).
• 🔨 Phillips screwdriver (for removing protection).
• 🧲 Magnet or tweezers (so as not to drop the bolt).
• 🧴 WD-40 or similar lubricant (if the sensor is stuck).
• 🔌 New speed sensor (check the article number!).

Work order:

1. Preparation:
   • Turn off the engine and put the car on the handbrake.
   • Disconnect the negative terminal from the battery.
   • Jack up the front right wheel (for convenience).
2. Sensor access:
   • Remove the engine protection (if equipped).
   • Locate the sensor on the box (see location section).
   • Clean it from dirt (you can use a brush).
3. Removing the old sensor:
   • Disconnect the connector by pressing the latch.
   • Using a 10mm wrench, unscrew the fastening bolt.
   • Carefully pull out the sensor (it may be tight).
4. Installing a new sensor:
   • Lubricate the O-ring of the new sensor (if equipped).
   • Insert it into the seat and tighten the bolt.
   • Connect the connector until it clicks.
5. Check:
   • Connect the battery.
   • Start the engine and check the speedometer operation.
   • Drive 5-10 km to ensure there are no errors.

If after replacement Check Engine does not go out, reset the error using a scanner or by disconnecting the battery for 10 minutes.

⚠️ Attention! On Almera G15 with variator CVT after replacing the speed sensor it may be necessary throttle adaptation. To do this, you need a diagnostic program (for example, Nissan DataScan).

Common mistakes when replacing a speed sensor

Even experienced car owners sometimes make mistakes that lead to repeated breakdowns or new problems. Here the most common mistakes and how to avoid them:

• 🔧 Wrong article number — purchase of a sensor for another model (for example, from Renault Duster). Always check the number with the original.
• 🧲 Bolt loss — if it falls into the transmission pan, you will have to remove the box. Use a magnet!
• 🔌 Connector damage — do not pull on the wires, only on the body of the chip.
• 🛑 Ignoring errors - if after replacement it lights up Check Engine, don't ignore this.
• 🚗 Untested sensor - even a new DS can be defective. Test it with a multimeter before installation.

Another common mistake is incorrect bolt tightening. If you overtighten, you can break the threads in the aluminum gearbox housing. If you don't tighten it enough, the sensor will dangle and the signal will be unstable.

If problems remain after replacement, check:

• Integrity of wiring from sensor to ECU.
• Condition of the contacts in the connector (oxidation, contamination).
• The presence of other errors in the ECU (for example, in the crankshaft position sensor).

Related problems: what else might break?

The speed sensor is not the only element that affects the operation of the speedometer and ABS. If after replacing it the problems remain, check:

1. Speedometer cable (on manual transmissions) - over time it frays or breaks.
2. Engine ECU - may incorrectly process the signal from the DS.
3. ABS sensors — their malfunction also leads to the lamp on the tidy coming on.
4. Wiring — chafed or oxidized wires give false signals.

On Almera G15 a common problem with oxidation of contacts in the ECU connector. To fix it:

1. Remove the fuse box cover (next to the battery).
2. Locate the ECU connector (usually gray).
3. Disconnect it and clean the contacts with alcohol or a special liquid.
4. Check the integrity of the wires (especially those going to the speed sensor).

If the speedometer works but shows incorrect values, the problem may be sensor drive (gear inside the gearbox). In this case, the box will need to be disassembled.

How to check the speedometer cable?

On a manual transmission, the cable runs from the gearbox to the speedometer. To check it:

1. Disconnect the cable from the gearbox.

2. Scroll it by hand - it should rotate smoothly, without jamming.

3. If the cable is torn or jammed, it needs to be replaced (part number for Almera G15: 39450-4M000).

FAQ: Frequently asked questions about the Nissan Almera G15 speed sensor

🔧 Is it possible to drive with a faulty speed sensor?

Technically possible, but not advisable. Without correct speed data, the ECU goes into emergency mode, which leads to:

• Increased fuel consumption (by 10–15%).
• Unstable operation of the automatic transmission/variator (jerks when switching).
• Failure of cruise control and ABS.

In addition, you will not know your real speed, which is a safety hazard.

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

Original sensor Nissan (39420-4M000) more reliable, but more expensive. Analogues (Febi, Hitachi) are cheaper, but their service life is shorter (about 50–80 thousand km). If your budget allows, take the original. Suitable for temporary replacement ERA or Valeo.

⚡ After replacing the speed sensor, the Check Engine light came on. What to do?

Reset the error in one of the following ways:

1. Disconnect the battery for 10–15 minutes.
2. Use a diagnostic scanner (eg ELM327).
3. If the error appears again, check the wiring or the sensor itself (possibly defective).

🔄 Is it possible to clean the speed sensor instead of replacing it?

Sometimes it helps. Remove the sensor, clean its contacts and housing from dirt (use alcohol or contact cleaner). Also check drive gear inside the gearbox - if it is worn out, the sensor will give incorrect signals even after cleaning.

🚗 Where to buy a speed sensor for Nissan Almera G15?

Optimal options:

• Official dealers Nissan (guaranteed, but expensive).
• Online stores (Exist.ru, Autodoc, Kolesa-darom).
• Retail parts stores (check availability before travel).

The average delivery time is 1–3 days. When purchasing online, be sure to check whether the sensor is suitable for your year of manufacture and transmission type.