Oxygen sensor (or lambda probe) in Nissan Almera G15 - a key element of the engine management system, responsible for correct mixture formation and environmental friendliness of the exhaust. Its malfunction leads to increased fuel consumption, unstable engine operation and an error light. P0130–P0167 on the dashboard. Unlike older models Almera Classic, in G15 (2012–2019) two sensors are used: upper (before the catalyst) and lower (after), and the first one fails more often due to high temperatures.

Self-replacement of the lambda probe with Almera G15 with engines HR15DE or HR16DE does not require specialized equipment, but has nuances: from the correct selection of an analogue to the careful dismantling of stuck threads. In this article, we'll look at how to diagnose the problem, what tools are needed, and how to avoid common mistakes that lead to damage to the wiring or threads in the exhaust manifold.

Signs of a malfunctioning oxygen sensor on a Nissan Almera G15

The first symptoms of a lambda probe failure are often confused with fuel system or ignition problems. However, there are specific signs that directly point to the sensor:

  • 🔥 Check the engine (Check Engine) lights up 5-10 minutes after starting. Errors P0130 (sensor 1 circuit malfunction), P0133 (slow response) or P0134 (no signal) is a sure sign.
  • ⛽ Sharp increase in fuel consumption (by 1–2 liters per 100 km) while maintaining the driving style. This is due to the fact that the ECU goes into emergency mode and enriches the mixture.
  • 🚗 Dips during acceleration or “dullness” of the engine at speeds of 2000–3000 rpm. The lambda probe does not correct the mixture composition, which leads to detonation.
  • 💨 Unpleasant exhaust smell - the mixture becomes too rich, and the car may smell of gasoline or sulfur.

Important: on Almera G15 with a mileage of more than 100 thousand km, the oxygen sensor often fails due to contamination by oil combustion products (if there is fumes) or low-quality fuel with additives. Before replacing, check the condition of the spark plugs - if they are coated with oil, the problem may be deeper (for example, in the oil scraper rings).

⚠️ Attention: If the error P0130 appears immediately after starting the engine, the problem may not be in the sensor, but in the wiring or connector. Check the circuit with a multimeter (resistance between pins 1 and 4 should be 2–10 Ohms at +20°C).

Which oxygen sensor to choose for Nissan Almera G15

On Almera G15 oxygen sensors are installed with 4 wires (two signal and two for heating). Original article number of the upper sensor (before the catalyst) - 22690-4M015, lower (after the catalyst) - 22690-4M016. However, the original is from Nissan is expensive (3000–5000 rubles), so owners often choose analogues:

Manufacturer Article Price, rub. Features
Bosch 0 258 006 537 1800–2500 Best price/performance ratio, suitable for top sensor
Denso DOX-0218 2200–3000 Original supplier for Nissan, long service life
NGK NTK 25177 2000–2800 Good compatibility with ECU Almera G15, rarely requires adaptation
Walker 250-24158 1500–2000 Budget option, but may require replacement after 30–40 thousand km

When choosing an analogue, pay attention to wire length - on Almera G15 it must be no shorter than 40 cm, otherwise it will not be enough for regular installation. Also check availability protective cap on the sensitive element (cheap Chinese sensors often do not have it, which reduces their service life).

📊 Which oxygen sensor do you prefer to install?
  • Original Nissan
  • Bosch
  • Denso
  • NGK
  • Other brand

If you buy a used sensor (for example, at a disassembly site), be sure to check its performance with a multimeter:

  1. Connect the probes to the contacts 1 (signal) And 4 (mass).
  2. A heated sensor (after 2–3 minutes of engine operation) should produce voltage 0.1–0.9 V when changing speed.
  3. Heater resistance (contacts 2 And 3) should be 2–14 ohms.

Tools and preparation for replacement

To replace the lambda probe with Nissan Almera G15 you will need:

  • 🔧 Special key for 22 mm with a slot for the wire (a regular horn will not work due to limited space).
  • 🔥 Penetrating lubricant (For example, WD-40 or Liqui Moly MoS2) - the thread often sticks.
  • 🔌 Flat blade screwdriver to disconnect the sensor connector.
  • 🛠️ 10 mm socket wrench (to remove the engine protection if it is in the way).
  • 🧤 Gloves — the exhaust manifold and sensor heat up to high temperatures.

Before starting work:

  1. Allow the engine to cool (at least 1-2 hours) to avoid burns or damage to the threads.
  2. Disconnect the negative terminal of the battery - this will prevent a short circuit when working with the wiring.
  3. If the sensor does not unscrew, do not apply excessive force - it is better to re-treat the thread with lubricant and wait 10-15 minutes.

Cool the engine|Disconnect the battery|Apply thread penetrating lubricant|Prepare new sensor and tools|Check for spare wiring clamps-->

⚠️ Attention: On Almera G15 with engine HR16DE The top sensor is located in an inconvenient place - next to the thermostat. If access is difficult, remove the air filter or part of the protection.

Step-by-step instructions for replacing the oxygen sensor

The process of replacing the upper sensor (before the catalyst) with Nissan Almera G15 takes 30–60 minutes. Follow the instructions:

  1. Removing the old sensor:
    1. Locate the sensor connector (usually located on the wiring harness near the manifold). Press the latch and disconnect it.
    2. Place a 22mm wrench on the hexagon of the sensor and try to turn it counterclockwise. If it doesn’t work, spray lubricant and wait.
    3. After removal, inspect the threads in the manifold - if they are damaged, you will need a tap to repair them.
  2. Installing a new sensor:
    1. Apply to the threads of the new sensor high temperature copper paste (For example, Loctite 5980) - this will prevent sticking.
    2. Screw the sensor by hand until it stops, then tighten it firmly with a wrench 40–50 Nm (do not overtighten!).
    3. Connect the connector and secure the wiring with standard clamps, avoiding contact with hot engine parts.
  3. Check:
    1. Connect the battery and start the engine. Wait until the sensor warms up (2-3 minutes).
    2. Check the errors with a scanner - if P0130 disappeared, replacement was successful.
    3. If the error remains, check the wiring circuit or the quality of the contact in the connector.

For the lower sensor (after the catalytic converter), the process is similar, but it is easier to access - it is located closer to the rear of the car. Main difference: the lower sensor fails less often, and its replacement is required only in case of mechanical damage or error P0141.

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If the sensor does not unscrew, try heating the collector with a hair dryer (up to 100–150°C) - this will help destroy the corrosion. But do not overheat so as not to damage the catalyst!

Typical replacement mistakes and how to avoid them

Even experienced car owners make mistakes that lead to repeated replacement or damage to the car. Here are the most common:

  • 🔧 Tightening the thread - leads to shearing of turns or cracks in the collector. Always use a torque wrench (max. 50 Nm).
  • 🔌 Wiring damage when disconnecting the connector. Pull the connector body, not the wires!
  • 💧 Lack of lubrication on threads — after 10–20 thousand km the sensor will “stick” again. Use Loctite 5980 or Permatex Anti-Seize.
  • 🔄 Confusion with upper and lower sensors. The upper one (before the catalyst) is always more expensive and has a different part number.
  • 🚫 Ignoring errors after replacement. If Check Engine does not go out, check the circuit with a multimeter or reset the ECU adaptations.

Pay special attention manifold gasket - if it is damaged during replacement, an air leak will appear and an error P0171 (lean mixture) will haunt you even with a new sensor.

What should I do if after replacing the error does not disappear?

If the sensor is new, but there is an error P0130 left, check:

1. **Power circuit** (pins 2 and 3 on the connector should show 12 V when the ignition is on).

2. **Signal wire** (pin 1) - resistance to the ECU should be no more than 1 Ohm.

3. **Ground** (pin 4) - check the reliability of the connection to the body.

4. **ECU firmware** - on some Almera G15 after 2016, adaptations need to be reset via Consult-III Plus or similar scanner.

Resetting errors and adapting a new sensor

After replacing the lambda probe with Nissan Almera G15 error Check Engine may remain in the ECU memory even if the sensor is working. To reset it:

  1. Use a diagnostic scanner (eg ELM327 with the program Torque Pro or Nissan DataScan).
  2. Select the Erase Errors function (Clear DTC).
  3. Start the engine and let it idle for 5-10 minutes - the ECU should “see” the new sensor.

On some versions Almera G15 (especially with ECU ECM-560) required sensor adaptation - a procedure in which the control unit “learns” the parameters of the new lambda probe. To do this:

  1. Clear errors with a scanner.
  2. Drive 10–15 km in mixed mode (city + highway), avoiding sudden acceleration.
  3. Recheck errors - if P0130 did not return, adaptation was successful.
⚠️ Attention: If after resetting the error appears again after 10–20 km, the problem may be catalyst (clogged or destroyed) or in air leaks (check manifold gasket and vacuum hoses).

When to contact the service

Although replacing the oxygen sensor with Nissan Almera G15 - a relatively simple procedure, in some cases it is better to trust professionals:

  • 🔧 If the sensor thread ripped off, and it does not unscrew - it will require drilling and cutting a new thread.
  • 💻 If after replacement they appear multiple errors (P0130, P0133, P0153) - there may be a problem in the ECU or wiring.
  • 🔥 If it was damaged during dismantling catalyst — its replacement requires welding.
  • ⚡ If you do not have a scanner to reset errors and adapt, without this the new sensor may not work correctly.

The cost of replacement in the service varies from 1500 to 3000 rubles. (excluding spare parts). If you are not confident in your abilities, it is better to pay for the work than to risk damage to the manifold or ECU.

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Self-replacement of the lambda probe with Almera G15 justified if the sensor can be unscrewed freely and there are no problems with the wiring. In other cases, saving on service can result in expensive repairs.

FAQ: Frequently asked questions about replacing an oxygen sensor

Is it possible to drive with a faulty oxygen sensor?

Technically possible, but not advisable. The ECU will go into emergency mode, which will lead to:

  • Increased fuel consumption (up to +20%).
  • Deterioration of acceleration dynamics.
  • Risk of damage to the catalyst (due to an over-rich mixture).

On Almera G15 With a mileage of more than 150 thousand km, long-term driving with a faulty sensor can accelerate wear of the catalyst.

How to distinguish the upper sensor from the lower one?

On Nissan Almera G15:

  • Upper sensor located before the catalyst (closer to the engine), has an article number 22690-4M015.
  • Bottom sensor worth it after the catalyst, article 22690-4M016.

Visually: the upper sensor is usually dirtier (covered with soot), and the lower one is cleaner (since it works with already purified gases).

Does a new sensor need to be “trained”?

On most Almera G15 adaptation occurs automatically after 10–15 km of run. However, if the error P0130 returns, you will need:

  1. Reset errors using the scanner.
  2. Drive in “city + highway” mode without sudden acceleration.
  3. Recheck errors.

On vehicles with ECU ECM-560 (2017–2019) sometimes requires forced adaptation through diagnostic equipment.

Is it possible to clean the old sensor instead of replacing it?

Theoretically yes, but the effect is temporary. To clean:

  1. Remove the sensor and soak its sensing element in phosphoric acid for 10–15 minutes.
  2. Rinse with water and dry.
  3. Reinstall.

However, after such a procedure, the sensor will last no more than 5–10 thousand km. On Almera G15 With a mileage of more than 100 thousand km, cleaning is impractical - it is better to immediately install a new one.

What are the consequences if you do not change the sensor?

Ignoring a malfunctioning lambda probe leads to:

  • Damage catalyst (replacement cost - from 20,000 rubles).
  • Increased wear spark plugs And coils.
  • Increased exhaust toxicity (fail inspection).
  • Risk engine overheating due to incorrect mixture.

On Almera G15 with engine HR16DE Driving for a long time with a faulty sensor can lead to detonation and damage to the piston group.