Nissan Note - a popular compact van, which is valued for its efficiency and reliability. But even such cars eventually develop problems with the exhaust system, and catalytic converter (catalyst) is one of the most vulnerable parts. Its malfunction not only worsens environmental performance, but can also lead to serious engine damage.

In this article we will look at how recognize problems with the catalyst on Nissan Note (including models E11 And E12), what reasons lead to its failure, and what to do: repair, clean or change. We will also consider unique nuances for Russian operating conditions, where fuel quality and road conditions often reduce the life of the catalyst.

Signs of a faulty catalyst on a Nissan Note

The first symptoms of problems with the catalyst are often confused with malfunctions of the oxygen sensors or fuel system. However there is key features, which directly indicate wear or destruction of the catalytic converter:

  • 🔥 Check the engine (Check Engine) light comes on with errors P0420 or P0430 - they signal low catalyst efficiency.
  • 🚗 Power Loss when accelerating, especially at speeds above 100 km/h, the engine “suffocates”, since a clogged catalyst creates resistance to exhaust gases.
  • 🔊 Rattling or rattling noise under the bottom during startup or at idle speed - a sign of destruction of the ceramic honeycomb.
  • 💨 Increased fuel consumption (by 10–15%) due to the fact that the ECU is trying to compensate for the poor exhaust with a rich mixture.

On Nissan Note with engines HR15DE (1.5 l) and HR16DE (1.6 l) catalyst often fails after 120–150 thousand km, but if low-quality gasoline or oil is used, this period can be reduced to 80 thousand km. Important: If you ignore the symptoms, ceramic dust from the destroyed catalyst will enter the cylinders and damage the piston group.

⚠️ Attention: On Nissan Note with automatic transmission (variator Jatco) a faulty catalyst can cause overheating of the oil in the box due to increased load on the engine. This can lead to costly repairs of the variator.

The main reasons for catalyst failure

Catalyst on Nissan Note It breaks for a reason. Here main reasons, which accelerate its wear:

  1. Bad fuel. Gasoline with a high sulfur content or additives “kills” the catalytic layer within 20–30 thousand km. In Russia, this is especially true for regions with low fuel quality.
  2. Misfires. Unburned fuel burns out in the catalyst, overheating it to 1000°C (the norm is 600–800°C). A common cause is worn spark plugs or armor wires.
  3. Mechanical damage. Impacts from curbs or off-road driving can chip the ceramic block.
  4. Maslozhor. If the engine “eats” oil (for example, due to worn oil scraper rings), it covers the catalyst honeycombs with soot, clogging them.

On Nissan Note with engine K9K (diesel 1.5 dCi) the catalyst suffers from a particulate filter (DPF). If it is not cleaned on time, soot clogs the honeycombs, and the ECU puts the engine into emergency mode. In such cases, a comprehensive replacement is often required. DPF + catalyst.

📊 What kind of fuel do you put in your Nissan Note?
  • 92 gasoline
  • 95 gasoline
  • 98 gasoline
  • Diesel
  • Gas (GBO)

How to check the catalyst on a Nissan Note yourself

Before going to the service center, you can do preliminary diagnostics with your own hands. Here are the step-by-step instructions:

Visual inspection on a lift or pit (check the integrity of the body)

Listen to the exhaust at idle - the roar indicates destroyed honeycombs

Measure the back pressure in the exhaust system (standard: up to 0.3 kgf/cm² at 3000 rpm)

Connect the OBD-II scanner and check for errors (especially P0420, P0430, P2096)

Compare the temperature before and after the catalyst (the difference should be 100–150°C) -->

To check the back pressure you will need a pressure gauge and an adapter. Connect it instead of the first lambda probe (before the catalyst) and measure the pressure at rpm 2500–3000. If the value exceeds 0.5 kgf/cm², the cells are clogged and the catalyst must be replaced.

Another way - endoscopy. You can insert an endoscope through the hole for the oxygen sensor and inspect the condition of the cells. If they are melted, clogged with soot or crumbled, the part is faulty. On Nissan Note with mileage over 100 thousand km this occurs in 70% of cases.

⚠️ Attention: Do not try to “burn” the catalyst at high speeds - this can lead to melting of the honeycombs and complete blocking of the exhaust tract. On Nissan Note with engine HR16DE this often ends with water hammer when ceramic chips get into the cylinders.

Cost of replacing a catalyst on a Nissan Note in 2026

The price of the issue depends on the type of catalyst, region and method of repair. Below is a table with current prices for Nissan Note (2006–2020 models):

Type of work Original catalyst Universal (used or new) Removal + snag
Part cost (RUB) 45 000 – 70 000 12 000 – 25 000 3,000 – 8,000 (flame arrester + blende)
Work (replacement, rub.) 8 000 – 15 000 5 000 – 10 000 4 000 – 7 000
Total (RUB) 53 000 – 85 000 17 000 – 35 000 7 000 – 15 000
Service life 150–200 thousand km 50–100 thousand km No (requires regular checking of lambda probes)

Original catalysts from Nissan (articles: 205B0-4M000, 205B0-4M001) are expensive, but will last longer. Universal analogues (for example, Bosal, Walker) are cheaper, but their resource is lower. Removing the catalyst with installing a flame arrester and lambda probe decoys - the most budget option, but it is illegal for maintenance and can cause problems with the ECU.

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If your budget is limited, consider purchasing a used catalyst from disassembly. The main thing is to check it for back pressure before installation. On Nissan Note fit parts from Micra K13 And Juke with similar engines.

Removing the catalyst: pros, cons and legal risks

Many owners Nissan Note consider removing the catalyst as a way to save money. However, this solution has serious pitfalls:

  • ✅ Pros:
    • 💰 Save up to 50,000 rubles. compared to replacement.
    • 🚀 Improved dynamics (by 5–10%) due to reduced exhaust resistance.
    • 🔧 It is easier to repair the exhaust system in the future.
  • ❌ Cons:
    • 🚨 You will not pass the technical inspection (since 2022 they have been checking with a gas analyzer).
    • 🔥 Risk of overheating of the exhaust manifold (without a catalyst, the exhaust temperature increases).
    • 📉 ECU errors are possible (P0420), if the snag is installed incorrectly.

On Nissan Note with engine HR15DE after removing the catalyst it is often necessary ECU firmware for Euro-2 or installation lambda probe emulator. Without this, the car will be “dull” and consume more fuel. In Moscow and St. Petersburg they charge from 10,000 to 20,000 rubles for such modifications.

⚠️ Attention: In some regions (for example, Moscow, St. Petersburg) you can be fined 500–2000 rubles for driving without a catalyst. according to Art. 12.5 Code of Administrative Offenses (malfunctions in which operation is prohibited). Also, insurance companies may refuse to pay in case of an accident if the examination reveals a removed catalyst.

How to extend the life of the catalyst on a Nissan Note

If the catalyst is still in good condition, but you want delay its replacement as much as possible, follow these guidelines:

  1. Refuel at proven gas stations. Use gasoline no less than AI-95 (better AI-98 for HR16DE). Avoid "noname" gas stations - their fuel often has a high sulfur content.
  2. Monitor the ignition system. Change spark plugs every 30,000 km, armored wires - every 60,000 km. Misfire is the main cause of catalyst overheating.
  3. Control oil consumption. If the engine “eats” oil (more than 500 ml per 1000 km), look for the cause: worn rings, valve stem seals or turbine (on diesel Note).
  4. Don't ignore mistakes P0420. When it first appears, check the catalyst - at an early stage it can be clear special liquids (for example, Liqui Moly Pro-Line).

On Nissan Note with variator Jatco It is especially important to avoid prolonged driving at high speeds (more than 4000 rpm) - this increases the load on the catalyst and reduces its life. It is also not recommended to tow a trailer or overload the car: the additional weight causes the ECU to enrich the mixture, which leads to overheating of the exhaust system.

Is it possible to clean the catalyst on a Nissan Note?

Yes, but only at the early stage of clogging. For this purpose, special cleaners are used (for example, Hi-Gear HG3270 or Wynn's). Process:

1. Remove the catalyst.

2. Soak it in the cleaner for 10-12 hours.

3. Rinse with water under pressure (do not use metal brushes!).

4. Dry and reinstall.

Important: This method only works if the honeycomb is not melted or crumbled. In 60% of cases Nissan Note with mileage >150 thousand km, cleaning is already useless.

Where to buy and how to choose a catalyst for Nissan Note

When purchasing a new catalyst, pay attention to:

  • 🔧 VIN compatibility. Check the article number of the original part in the database ETKA or Nissan Consult. For Note E11 (2006–2012) and E12 (2012–2020) catalysts are different!
  • 📋 Type of certification. Original or certified analogue (for example, Bosal, Magneti Marelli) must be marked ECE R103 or Euro 5/6.
  • 🛡️ Guarantee. Original parts are guaranteed for 2 years, universal parts are guaranteed for 6–12 months.
  • 💰 Price. If the offer is 30% cheaper than the market, it is most likely a fake or used without a guarantee.

Where to buy:

  • 🏬 Official dealers Nissan. The most reliable, but expensive option.
  • 🛒 Online stores: Exist.ru, Autodoc.ru, Emex.ru. Here you can find originals and high-quality analogues with a discount of up to 20%.
  • 🔄 Showdown. Suitable catalysts can be found at Note, Micra or Juke with similar engines. The main thing is to check the mileage of the donor (no more than 100 thousand km).

For Nissan Note with engine HR16DE suitable catalysts from Nissan Juke (2010–2014) and Renault Clio IV (with the same motor). This can save up to 15% of the cost.

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When buying a used catalyst, be sure to check it against the light: if a lamp does not shine through the honeycombs, it means they are clogged with soot or melted. Such a catalyst will last no more than 10–20 thousand km.

FAQ: Frequently asked questions about the catalyst on Nissan Note

Is it possible to drive with a clogged catalyst?

Technically it is possible, but this will lead to:

  • Increased fuel consumption (up to +20%).
  • Engine overheating and risk of damage to the piston group.
  • Loss of power (the car will be “stupid” when overtaking).

On Nissan Note with a variator, this will also accelerate the wear of the box due to the increased load.

Which is better: an original catalyst or a universal one?

The original will last longer (150–200 thousand km), but costs 2–3 times more. Universal (for example, Bosal) is cheaper, but its resource is 50–100 thousand km. The choice depends on the budget and plans for the car:

  • If Note for sale - take a universal one.
  • If you plan to drive for another 5+ years - the original.
How to fool the lambda probe after removing the catalyst?

There are three ways:

  1. Mechanical snag. Installed in place of the second oxygen sensor. Costs 1000–2000 rubles, but may cause an error P0420 on some firmwares.
  2. Emulator (electronic decoy). Simulates the signal of a working catalyst. Price: 3000–6000 rub. On Nissan Note with HR16DE requires customization for a specific ECU.
  3. ECU flashing. Disables catalyst control in the firmware. It costs 10,000–20,000 rubles, but is guaranteed to remove errors.

The best option is an emulator or firmware, since the mechanical snag often only works at idle.

How much does it cost to replace a catalyst on a Nissan Note at a service center?

The cost depends on the type of work:

Type of repair Price (RUB)
Replacement with the original (part + work) 50 000 – 85 000
Replacement with a universal catalyst 15 000 – 30 000
Removal + flame arrester + blende 7 000 – 15 000
Cleaning the catalyst (if possible) 3 000 – 6 000

In the regions, prices are 10–20% lower than in Moscow or St. Petersburg.

What errors indicate problems with the catalyst?

On Nissan Note most often found:

  • P0420 — low catalyst efficiency (bank 1).
  • P0430 - the same for bank 2 (on V-engines).
  • P2096 — the post-catalytic oxygen sensor signals a lean mixture (often associated with a clogged catalyst).
  • P0171/P0172 - too lean/rich mixture, may be an indirect sign of exhaust problems.

If errors appear after refueling, the fuel is most likely to blame. If it’s constant, check the catalyst and lambda probes.