Article 22630-44B20 from Nissan - one of those details that raises a lot of questions among owners of Japanese cars. At first glance, a set of numbers and letters seems meaningless, but in fact it hides specific information about the purpose, compatibility, and even the manufacturer of the spare part. If you are faced with the need to replace this part, but do not know what it is and with which models Nissan compatible and where is the best place to buy it - this article will help you sort everything out.

We won’t just list the technical characteristics, but dive into the nuances: from why an original part can cost 2-3 times more than an analogue, to hidden risks when buying used spare parts from disassembly sites. We’ll also figure out how to distinguish a fake from an original by little things that are often overlooked even by experienced auto mechanics. Are you ready? Then let's start with the main thing - what is hidden behind this mysterious article.

What is 22630-44B20: decoding of the article and purpose of the part

Article 22630-44B20 belongs to the category electrical components Nissan. Specifically, this is cooling fan control unit (also known as fan control module or radiator fan relay). Its main function is to regulate the rotation speed of the radiator fan depending on the engine temperature and signals from the ECU.

Let's decipher the article itself according to the standard Nissan:

  • 🔢 22630 — part group code (cooling system electronics).
  • 🔤 44B20 — a unique model identifier indicating compatibility with specific vehicles and modifications.

This module works in conjunction with a temperature sensor and the engine ECU. When overheating, it activates the fan at full power, and in normal mode maintains the optimal temperature. A faulty unit leads to two critical problems:

  1. The fan does not turn on at all → risk of engine overheating.
  2. The fan constantly operates at maximum speed → increased fuel consumption and wear of parts.
📊 What problem are you facing?
  • The fan does not turn on
  • The fan runs constantly
  • Error on the dashboard
  • Other

What Nissan models is the 22630-44B20 compatible with?

Official documentation Nissan indicates that the block 22630-44B20 installed on the following models (taking into account the years of manufacture and engine modifications):

Model Years of manufacture Engines Notes
Nissan X-Trail (T31) 2007–2013 MR20DE (2.0), QR25DE (2.5) Only for versions with automatic transmission
Nissan Qashqai (J10) 2007–2013 MR20DE (2.0), M9R (2.0 dCi) Not compatible with restyling 2014+
Nissan Teana (J32) 2008–2013 VQ25DE (2.5), VQ35DE (3.5) For European and Asian markets only
Nissan Murano (Z51) 2008–2014 VQ35DE (3.5) Compatible with front wheel drive versions only

Important: Even if your model is on the list, check Vehicle VIN code or body number. The point is that Nissan sometimes made changes to electrical circuits within one generation. For example, Qashqai 2012 with engine MR20DE could be equipped with another block (article no. 22630-4M000), if the car was exported to countries with hot climates.

How to check compatibility by VIN?

Open the hood and look for the VIN plate (usually on the windshield or door pillar). The first 3 characters will indicate the region and manufacturer, and 4–8 characters will indicate the model and modification. Check them against the database Nissan TechInfo or use services like VIN decoder.

Symptoms of a faulty unit 22630-44B20

A fan control unit failure rarely occurs suddenly; it is usually preceded by “symptoms” that can easily be confused with other problems. Here are the key signs that it is the culprit: 22630-44B20:

  • 🔥 Fan does not turn on when overheated (the temperature on the dashboard is over 100°C, and the fan is silent).
  • ❄️ The fan runs constantly, even on a cold engine.
  • ⚠️ Error P0480 or P0481 in diagnostics (related to the fan control circuit).
  • 🔌 Periodic fan failures (sometimes it works, sometimes it doesn’t).
  • 💡 Check Engine Light for no obvious reason.

To accurately confirm the unit is faulty, perform a simple test:

  1. Disconnect the connector from the unit (usually located near the radiator or on the fender).
  2. Check the voltage at the contacts with the ignition on (there should be 12 V on food).
  3. If there is voltage, but the fan does not respond, the unit is faulty.
⚠️ Attention: Do not confuse a unit malfunction with problems with the fan itself or the temperature sensor! For example, if the fan does not work, but spins when connected directly to the battery, either the unit is to blame 22630-44B20, or wiring.

Original vs analogues: what to choose?

Original block 22630-44B20 from Nissan costs from 8,000 to 12,000 rubles (for 2026). Price depends on supplier and region. But there are analogues on the market from third-party manufacturers that cost 2–3 times less. Is it worth saving?

Manufacturer Analog article Price, ₽ Pros Cons
Standard Motor Products RU-317 3 500–4 200 Good build quality, 2 year warranty Sometimes there are defective copies
Febi Bilstein 22630 4 800–5 500 1:1 compatibility with original More expensive than most analogues
Meat & Doria 77005 2 800–3 300 Budget option, easy to find Service life less than original

Our advice: if you plan to drive the car for a long time, it is better to take the original or an analogue from Standard Motor Products/Febi. Cheap Chinese replacements (like Unipoint or no-name brands) often fail after 1-2 years and have a limited warranty of 6 months.

💡

Before purchasing an analogue, check its article number with the database Autodoc or Exist. Sometimes they sell parts for different generations of cars under the same number!

Where to buy the original 22630-44B20 and not run into a fake

Original spare parts Nissan sold through several channels:

  • 🏢 Official dealers - the most reliable option, but prices are 20–30% higher than the market.
  • 🛒 Specialty stores (For example, Nissan Parts Online, Amayama) - often offer discounts of up to 15%.
  • 🌍 Foreign sites (eBay, Amazon, AliExpress) - the risk of running into a fake or used part disguised as a new one.
  • 🔧 Showdown - cheap (from 2,000 ₽), but without a guarantee and with the risk of hidden defects.

How to distinguish an original from a fake:

  1. Packaging: The original comes in a branded box Nissan with a hologram and barcode, which can be checked on the manufacturer’s website.
  2. Marking: The block itself must have an article number engraved on it. 22630-44B20 and logo Nissan (not a sticker!).
  3. Plastic quality: The original has matte plastic without burrs, fakes often shine and smell like cheap ABS.
⚠️ Attention: On AliExpress and similar sites often sell “originals” at a price of 3,000–4,000 rubles. This is 100% fake - Nissan does not supply spare parts directly to Chinese marketplaces. Buy only from trusted sellers with a rating above 98%.

Check VIN Compatibility|Check Seller Feedback|Check Photos of Part with Original|Check Warranty-->

Self-replacement of block 22630-44B20: step-by-step instructions

You can replace the fan control unit yourself in 30–40 minutes. You will need:

  • 🔧 A set of socket wrenches (usually 10 mm).
  • 🔌 Screwdriver with a flat blade (for removing clips).
  • 🧤 Gloves (the unit may be dirty or hot).

Step by step process:

  1. Disconnect the negative terminal of the battery (required!).
  2. Remove the air filter (on most models the unit is located behind it).
  3. Disconnect the power connector from the unit (press the latch and pull it up).
  4. Unscrew 2-3 bolts securing the block (usually 10 mm).
  5. Install the new unit in reverse order.

After replacement be sure to clear errors via a diagnostic scanner (for example, ELM327) or by disconnecting the battery for 10 minutes. If the fan still does not work, check:

  • 🔌 fuse (usually F30 or F32 in the block under the hood).
  • 📶 Wiring for breaks or oxidation.
  • 🌡️ Temperature sensor (may give false signals).
💡

If after replacing the unit the fan runs constantly, check the temperature sensor or ECU firmware. This is a sign that the new unit is not compatible with your model!

Common replacement mistakes and how to avoid them

Even experienced car owners sometimes make mistakes that lead to repeated breakdowns or damage to a new part. Here are the most common:

  • ⚡ Doesn't disconnect the battery → risk of short circuit when working with electrical equipment.
  • 🔧 Tighten the fastening bolts → the block body cracks.
  • 🔌 Do not check the connector for oxidation → poor contact = repeated failure.
  • 📄 ECU errors do not reset → false positives Check Engine.

Another typical problem is buying a block wrong generation. For example, for Nissan X-Trail T31 before 2010 and after 2010 different versions may be used 22630-44B20 (they differ in firmware). Check this with the seller!

⚠️ Attention: If, after replacing the unit, the fan turns on only at maximum speed, but there is no adjustment, most likely you installed a part from a different model. For example, a block from Teana J32 not always compatible with Qashqai J10, despite the same article number.

FAQ: Answers to frequently asked questions

Is it possible to drive with a faulty unit 22630-44B20?

Technically possible, but highly not recommended. Without a working fan, the engine will overheat, which leads to:

  • 🔥 Deformation of the cylinder head (repair from 50,000 ₽).
  • 💧 Loss of oil properties and accelerated wear of the piston group.
  • 🚗 Breakdown of the thermostat or pump (additional costs).

If the block breaks on the way, drive at minimum speed and monitor the temperature. Replace the part at the first opportunity.

How to check block 22630-44B20 with a multimeter?

Set the multimeter to diode or resistance test mode. Connect the probes to the block contacts:

  • 🔋 Pin 1 and 2: there must be resistance 0.5–1.5 Ohm (whole relay winding).
  • 🔌 Pin 3 and 4: when serving 12 V There should be a click (relay activation).

If the readings are different, the unit is faulty.

What is the difference between 22630-44B20 and 22630-4M000?

These are fan control units for different generations of cars:

  • 22630-44B20 — for models 2007–2013 (X-Trail T31, Qashqai J10).
  • 22630-4M000 - for restyled versions 2014+ or cars with a different ECU.

Externally they may look the same, but have different firmware. Installing an incompatible block will lead to errors P0480/P0481.

Can unit 22630-44B20 be repaired?

Theoretically yes, but inappropriate. The block contains:

  • 🔧 Relays and transistors that can be replaced.
  • 🖥️ Control chip (non-repairable without specialized equipment).

The cost of repairs at the service will be 3 000–5 000 ₽ - almost like a new analogue. Better to buy a replacement.

Where is block 22630-44B20 located in Nissan Qashqai J10?

B Qashqai J10 (2007–2013) block located:

  1. Open the hood.
  2. Remove the air filter (unscrew the 4 clips).
  3. The unit is mounted on the left fender (driver's side), next to the radiator.

On some modifications it may be hidden under a plastic protection - it must be removed by snapping 2 clips.