Replacement of spark plugs incandescent Škoda Kodiaq: instructions with photos and expert advice

Replacement glow plugs on Škoda Kodiaq with diesel engines 1.6 TDI and 2.0 TDI A procedure that many owners postpone until the last. Worn spark plugs not only complicate cold start, but also increase fuel consumption by 10-15%, and in frosts can leave you without a working car. In this article, we will discuss how correctly diagnose the malfunctionWhich spark plugs to choose for Kodiaka 2017-2026, and why on the engine 2.0 TDI (CRTD) After 2020, mandatory adaptation through a diagnostic scanner is required..

The manufacturer recommends changing the spark plugs every time 60-100 thousand kmBut in practice, the service life depends on the quality of fuel, driving style and even climatic conditions. In the northern regions, spark plugs wear out 30% faster due to frequent cold starts. We've collected. step-by-step instructions with photosA comparative table of original and analog spark plugs, and list of errors90% of car owners are allowed to replace their cars.

Signs of malfunctioning spark plugs on the Škoda Kodiaq

The first sign of spark plug problems. difficult engine starting at temperatures below +5°C. But there are less obvious symptoms, which many blame on the "whisky diesel":

• 🔥 Engine jerking at idle speeds the first 1-2 minutes after launch (especially noticeable on the 1.6 TDI).
• ⚠️ Check Engine with errors P0380 (incandescent chains) or P0671-P0674 (individual spark plugs)
• ⛽ Increased fuel consumption - up to 1-1.5 l / 100 km due to suboptimal combustion of the mixture.
• 🌡️ White smoke from the exhaust in the first seconds after launch (not to be confused with steam in the cold!).

On Kodiaq with motor 2.0 TDI (2017-2019) Faulty spark plugs can cause misfire Even in warm weather, this is due to the peculiarities of the injection system. Common Rail. But on the restyled versions after 2020, electronics often give out an error P25A1 ("Cluster control circuit, low signal"), which cannot be reset without diagnostic equipment.

⚠️ Attention: If the icon on the dashboard lights up swelling (Yellow or red), this does not mean that the spark plug is not malfunctioning. food-chain. In this case, replacing spark plugs will not help - you need to check the relay (located under the hood next to the battery) and wiring to the control unit.

Which spark plugs are suitable for the Škoda Kodiaq: original vs analogues

Original spark plugs from VAG for Kodiaq have articles:

• 04L 905 051 E - for 1.6 TDI (CRTD, 85/115bhp)
• 04L 905 051 F - for 2.0 TDI (150/190 hp, until 2020)
• 04L 905 051 J - for 2.0 TDI (200/240 hp, after 2020)

The cost of the original is from 2,500 to 4000 rubles. per piece. But there are proven analogues that are not inferior in resource:

Manufacturer	Article	Compatibility	Average price, rub.	Features
Beru	GN 015	1.6 TDI/ 2.0 TDI (until 2020)	1 800	Ceramic heater, rapid heating (up to 1000 ° C in 2 seconds.)
Bosch	0 250 201 023	2.0 TDI (150/190 hp)	2 200	Long body – requires accuracy when installing
NGK	Y-701H	1.6 TDI (CRTD)	2 000	Resistant to overheating, recommended for northern regions
Denso	DG-163	2.0 TDI (after 2020)	2 500	They need to adapt through ODIS or VCDS

When choosing analogues, pay attention to thread-length - on 2.0 TDI After 2020, spark plugs are longer by 5 mm, and the installation of "short" analogues will lead to a new model. overheating And it's going to fail in 10,000 to 15,000. km. Check it out, too. resistance: for Kodiaq norm - 0.5-6 ohms (measured by a multimeter in the "vertebrae" mode).

Tools and preparation for replacing glow plugs

To work you will need:

• 🔧 10 mm socket wrench (To remove the decorative engine cover).
• 🔧 Head at 12 mm with an extension (for spark plugs on the 1.6 TDI).
• 🔧 Special 8 mm head with an internal hexagonal (for 2.0 TDI after 2020).
• 🧲 Magnetic gripper Spark plugs sit deep, and without it it is difficult to remove them.
• 🔌 Diagnostic scanner (VCDS, OBDeleven) - mandatory for 2.0 TDI 2020+.
• 🧴 Penetrating lubricant (WD-40 or Liqui Moly MoS2) - if the spark plugs have not been twisted for 5+ years.

Before starting work:

1. Disable negative battery terminal (required!) Otherwise, you risk burning the spark plug control unit.
2. Remove decorative engine cover (Applying 4 bolts on a turnkey 10 mm.)
3. Clear spark plug-well from dirt vacuum cleaner or compressed air - getting garbage into the cylinders is fraught with burrs on the walls.

Battery terminal disconnected|

Decorative engine cover removed |

The wells of spark plugs were cleaned of dirt |

Spark plug access checked (intake manifold may need to be removed on 2.0 TDI)|

Prepared diagnostic scanner (for models after 2020)

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On 2.0 TDI After 2020, access to spark plugs is difficult, it may be necessary. partial dismantling of the intake manifold. If the experience is not enough, it is better to contact the service: an error during the assembly will lead to air leaks and unstable engine operation.

Step-by-step instructions for replacing glow plugs

The process is different for 1.6 TDI and 2.0 TDISo let's look at both.

For the 1.6 TDI engine (CRTD, 85/115 hp)

1. Remove the connectors. Then, the lights will be turned on, and the lights will not be turned on.
2. Unscrew the spark plugs 12 mm head with extension cord. If the spark plug is boiling, apply it. WD-40, wait 10 minutes and try again. Do not use excessive force You risk breaking the thread in the block head.
3. Install new spark plugs, pre-lubricated copper paste (for example, Liqui Moly Kupfer-Paste). Tighten with torque 15 Nm.
4. Connect the connectors and check the engine start.

For the 2.0 TDI engine (150-240 hp)

1. Unplug the chips. with spark plugs, pressing the plastic fixator.
2. Unscrew the spark plugs with a special 8 mm head. On models after 2020, spark plugs sit deeper - use a 150 mm extension cord.
3. Install new spark plugs, but don't delay They're right! First screw in by hand, then pull out with a dynamometer key with a moment 20 Nm.
4. Connect the scanner (VCDS or OBDeleven) and execute light-cold adaptation through the block 19 (CAN Gateway) → Adaptation → Glow Plug Control Module.

On 2.0 TDI after 2020 without adaptation The control unit will not see the new spark plugs, and they will not work! This is a common mistake when replacing yourself.

What happens if you don't adapt?

Spark plug control unit (CDB)J748) does not recognize new spark plugs and disconnects their power supply. As a result:

The engine will start worse than with old (but still working) spark plugs.

- There's a mistake on the dashboard. P25A1which cannot be reset by a regular scanner.

- In 5,000 to 10,000. New spark plugs can fail due to incorrect control of heating.

Typical replacement mistakes and how to avoid them

Even experienced car owners make mistakes that lead to spark plug-damage or engine. Here are the most common:

• 🔧 Re-upholstery of spark plugs - leads to deformation of the body and cracks in the ceramics. Nana 2.0 TDI the tightening torque should not exceed 20 Nm.
• ⚡ Ignoring adaptation on models after 2020. Without it, the spark plugs will not warm, and the control unit will give an error.
• 🧹 Dirt getting into the cylinders If you do not clean the wells before replacing, the garbage will get into the combustion chamber and cause scoring on pistons.
• 🔌 Confusion with connectors - on 2.0 TDI The spark plug chips are visually similar to nozzle connectors. Nahum connection leads to short circuit.

⚠️ Attention: On Kodiaq with motor 2.0 TDI (240 hp) After 2021, the spark plugs are integrated with pressure sensors in cylinders. Their replacement requires flashing-over (ECU) Self-repair in this case is impossible - only official service.

Another common problem is spark plug-tip when unscrewing. If this happens:

1. Do not try to remove the fragment with tweezers - you risk scratching the thread.
2. Use special extractor for filament spark plugs (e.g. Lisle 65600).
3. If the wreckage fell into the cylinder, don't start the engine - Contact the service for extraction.

How much does it cost to replace glow plugs at a service center?

The cost of work depends on the region and type of engine:

Engine type	Cost of work, rub.	The cost of spark plugs (set), rub.	Total, rub.
1.6 TDI (85/115bhp)	2 500 - 3 500	8,000 - 12,000 (original)	10 500 - 15 500
2.0 TDI (150/190 hp, through 2020)	3 000 - 4 500	10,000 - 16,000 (original)	13 000 - 20 500
2.0 TDI (200/240 hp, after 2020)	5 000 - 7 000	12,000 - 20,000 (original)	17 000 - 27 000

At official dealerships Škoda The price is 20-30% higher, but they guarantee it. free adaptation and checking for errors. Garage services often save on diagnostics, which leads to problems with the launch.

How to extend the service life of spark plugs incandescent?

Spark plugs are hot. Kodiaq They last longer if:

• ⛽ Refueling with a quality diesel (not lower Euro 5). Sulfur impurities in the fuel destroy the ceramic heater.
• 🔥 Avoid short trips In winter, spark plugs do not have time to warm up to working temperature, which leads to swelling.
• 🔋 Monitor the voltage of the onboard network. If the generator is less than 13.8 VThe spark plugs are less warm.
• 🛠️ Clean the nozzles Every 40,000 to 50,000. km. The swelling of the swelling leads to fuel-burning and premature wear of spark plugs.

On 2.0 TDI with the system AdBlue spark plugs last 15-20% longer due to cleaner exhaust. But if the sensor AdBlue Failed, and you continue to drive without additives, the spark plug resource is reduced by 2 times!

It is also useful to check once a year (before winter). spark plug resistance multimeter:

1. Remove the plug from the spark plug.
2. Connect the multimeter probes to the spark plug contacts.
3. Normal resistance - 0.5-6 Ohm. If the readings are higher 10 ohmIt's time to change the spark plug.

FAQ: Frequent questions about replacing glow plugs with Škoda Kodiaq

Can I drive with a broken spark plug?

It is possible, but not advisable. On 1.6 TDI One non-working spark plug worsens the start in the cold, but is not critical. Nana 2.0 TDI (especially after 2020) a defective spark plug may cause a misfire and error P0300 (random omissions). In the long term this leads to catalyst wear.

How to check the spark plugs without removing?

There are 3 ways:

1. Testing with a multimeter Measure the resistance between the spark plug contact and the mass. Normal: 0.5-6 ohms.
2. Current check Connect the ammeter to the break of the spark plug chain. When the ignition is switched on, the current shall be 5-18 AA (depends on temperature).
3. Diagnostics with a scanner — in VCDS select block 19 (CAN Gateway) → Measurements → group 083 (spark plugs of heat) Normally, all values should be the same.

Which is better: original spark plugs or analogues?

Original spark plugs (VAG) guaranteed compatible but roads. Analogues (Beru, Bosch) is cheaper, but:

• On 2.0 TDI after 2020 original or Denso DG-163 Other analogues are not adapted.
• On 1.6 TDI fit NGK Y-701H - they last longer in the cold.

If your budget is limited, take it Beru GN 015 They are 30% cheaper than the original with the same resource.

Do I need to change all the spark plugs at once if one is broken?

Yes! The spark plugs wear out evenly. If one of them is out of order, the others are close. Replacing only one spark plug will result in:

• Uneven heating cylinders and vibrations on idle.
• Accelerated wear The remaining old spark plugs (they will work with overload).

Can I replace spark plugs with spark plugs? 2.0 TDI after 2020?

Technically yes, but you will need:

1. Special 8 mm head with an internal hexagon.
2. Diagnostic scanner (VCDS, OBDeleven) for adaptation.
3. Experience with diesel engines – access to spark plugs is difficult.

If there is no scanner, contact the service - without adaptation, new spark plugs will not work.