Error code P0302 on cars ŠKODA indicates a misfire in the second cylinder, a problem that can lead to serious consequences if ignored. Drivers often encounter this malfunction on models Octavia, Superb, Kodiaq and even Fabia, but its causes and solutions are universal for most of the concern’s engines VW Group (including 1.4 TSI, 1.6 MPI, 1.8 TSI and 2.0 TDI).

Misfires not only worsen the car's performance and increase fuel consumption, but can also damage the catalytic converter, the repair of which will cost a fortune. In this article we will look at unique diagnostic features of P0302 on ŠKODA, including the nuances of working with systems EA211 and EA888, and also give step-by-step instructions for self-repair - from checking spark plugs to analyzing fuel pressure.

What does error P0302 mean on ŠKODA?

Code P0302 stands for “Cylinder 2 Misfire Detected”** - the engine control unit (ECU) has detected a misfire in the second cylinder. Unlike common errors like P0300 (random omissions), here the problem is localized specifically in one cylinder, which narrows the range of possible causes.

By car ŠKODA with engines TSI and TDI The ECU analyzes data from the crankshaft, camshaft and lambda probes. If the crankshaft rotation speed deviates from the calculated one for the second cylinder, the system records an error. At the same time exceeding the skip threshold of 2-3% per 1000 revolutions is considered critical - that's when it lights up Check Engine.

  • 🔧 Characteristic symptoms of P0302:
  • ✅ The car jerks when accelerating (especially at low speeds).
  • ✅ Loss of power and engine tripping.
  • ✅ Increased fuel consumption by 10-20%.
  • ✅ Popping sounds in the exhaust system or intake manifold.
  • ✅ Sunbathing Check Engine with code P0302 (sometimes paired with P0300).

On engines EA211 (for example, 1.4 TSI on Octavia A7) the error is often accompanied by increased vibration at idle, and on diesel 2.0 TDI may be manifested by “hard” engine operation. It is important to note that on ŠKODA with the system Activ Cylinder Technology (cylinder shutdown) P0302 can occur due to improper operation of the shutdown valves.

The main causes of misfire in cylinder 2

Causes of error P0302 on ŠKODA are divided into three groups: problems with ignition, fuel system and mechanical problems. Statistics from service centers show that in 60% of cases, spark plugs or coils are to blame, but the remaining 40% require in-depth diagnostics.

Fault category Typical reasons Frequency of occurrence
Ignition system
  • Spark plug wear
  • Ignition coil breakdown
  • Damage to high voltage wire
 65%
Fuel system
  • Clogged injector of cylinder 2
  • Low fuel pressure
  • Fuel pump malfunction
 20%
Mechanical problems
  • Piston ring wear
  • Problems with valves (gaps, burnout)
  • Air leak through cylinder head gasket
 10%
Electronics and more
  • Crankshaft sensor malfunction
  • Problems with the ECU
  • EGR valve dirty
 5%

On engines 1.8 TSI and 2.0 TSI (series EA888) common cause of P0302 - ignition coil insulation breakdown, especially with mileage over 100,000 km. On diesel TDI the culprit is often nozzle clogged, and on atmospheric MPI — wear of high-voltage wires.

⚠️ Attention: On ŠKODA Octavia III with engine 1.4 TSI (CZDA) error P0302 may appear due to a defective piston group - check the compression if replacing spark plugs and coils does not help.
📊 Which ŠKODA model did you experience the P0302 code with?
  • Octavia
  • Superb
  • Kodiaq
  • Karoq
  • Fabia
  • Other

Diagnosing error P0302: step-by-step instructions

To accurately determine the cause of misfire in cylinder 2, follow the diagnostic algorithm. Start with the simplest checks and gradually move on to complex ones. To work, you will need a multimeter, a compression tester and a diagnostic scanner (for example, VCDS or OBDeleven).

  1. Reading errors.

    Connect the scanner and check for additional codes. For example, P0202 (injector fault on cylinder 2) or P0400 (EGR problems) will point in the direction of diagnosis.

  2. Visual inspection.

    Check the condition of the spark plug in cylinder 2 (carbon deposits, cracks, gap), high-voltage wire (if any) and coil. On TSI- in engines, coils often “leak” oil through the o-rings.

  3. Checking the ignition coil.

    Measure the resistance of the primary and secondary windings with a multimeter:

    • Primary winding: 0.5–1.0 Ohm.
    • Secondary winding: 8–12 kOhm (depending on the model).

    Deviations indicate a malfunction.

  4. Injector test.

    On gasoline engines, check the injector resistance (usually 12–16 Ohm). On diesels TDI You will need to check the injector balance using a diagnostic scanner.

  5. Compression measurement.

    Normal values for ŠKODA:

    • Gasoline engines: 12–14 bar (dispersion between cylinders is no more than 1 bar).
    • Diesel engines: 25–35 bar.

Low compression in cylinder 2 will indicate wear on the piston group or problems with the valves.

View errors with a scanner|Inspect the spark plug and coil of cylinder 2|Check the coil resistance|Measure the compression|Test the injector-->

On ŠKODA with the system Direct Shift Gearbox (DSG) Misfires can simulate problems with the transmission, such as shifting jerks. If the problem remains after resetting P0302, check crankshaft position sensor (CKP) and its connector for oxidation.

💡

On engines 1.4 TSI (series CZDA/CZEA) in case of error P0302, it is recommended to check the condition of the timing chain - its stretching can cause malfunction of the cylinders.

How to resolve error P0302: from simple to complex

The solution to the problem depends on the identified cause. Below is an algorithm of actions, from the most accessible to major interventions. Let's start with what you can do yourself.

1. Replacing the spark plug

On petrol ŠKODA It is recommended to change spark plugs every 30–60 thousand km (depending on model). For engines TSI spark plugs with iridium or platinum tips are suitable, for example:

  • NGK 97806 (for 1.4 TSI CZDA),
  • Bosch 0242235666 (for 1.8 TSI),
  • Denso IK20TT (for 2.0 TSI).

When replacing a spark plug in cylinder 2 be sure to check the gap (usually 0.7–0.9 mm) and the condition of the thread in the block head. If the spark plug is “wet” (filled with gasoline), this may indicate problems with the injector or low compression.

2. Checking and replacing the ignition coil

On engines EA211 and EA888 Ignition coils are a common cause of P0302. Signs of malfunction:

  • Cracks on the reel body.
  • Traces of oil or moisture inside.
  • Insulation breakdown (visible in the dark as a spark).

To replace the coil with ŠKODA Octavia:

  1. Remove the negative battery terminal.
  2. Disconnect the coil connector.
  3. Unscrew the fastening bolt (usually Torx T30).
  4. Remove the spool and install a new one (eg Beru ZS198 or Valeo 586143).

⚠️ Attention: On 2.0 TSI (engine CDLF) when replacing coils, be sure to update their firmware via VCDS - this eliminates problems with adaptation.

3. Cleaning or replacing the nozzle

If the diagnostics showed a problem with the nozzle, you can try to clean it with ultrasound or a special liquid (for example, Liqui Moly Injection Reiniger). However, on engines TDI with mileage over 150,000 km, replacement is more often required.

To clean the injectors without removing them:

  1. Connect the cleaner to the fuel rail.
  2. Start the engine and let it idle for 10-15 minutes.
  3. Repeat the procedure 2-3 times.

On ŠKODA Superb with engine 3.6 FSI (series BHK) misfires are often associated with contamination of the crankcase ventilation valve - cleaning it can eliminate P0302 without replacing the injectors.

4. Repair of mechanical faults

If the problem lies in low compression or valve wear, engine disassembly will be required. On ŠKODA Kodiaq with engine 2.0 TSI (CJXB) common problem - valve burnout in cylinder 2 due to overheating. In this case, valve replacement and lapping are necessary.

Service repair cost:

  • Replacing piston rings: from 25 000 ₽.
  • Valve grinding: from 15 000 ₽.
  • Replacing the cylinder head gasket: from 20 000 ₽.

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On diesel ŠKODA (for example, 2.0 TDI CRBC) error P0302 is often accompanied by a code P0202 - this is a direct signal that the injector is faulty, which cannot be cleaned, only replaced.

Despite the common reasons, each model ŠKODA has its own “sores” associated with P0302. Let's look at the most common cases.

ŠKODA Octavia III (5E) 1.4 TSI (CZDA)

On this engine, the P0302 code often occurs due to:

  • Piston group defect (the problem has been known since 2015).
  • Breakdown of ignition coils (especially with mileage >80,000 km).
  • EGR valve contamination, which leads to cylinder imbalance.

Solution: update the ECU firmware (there are patches from VW for CZDA), replace the coils with Beru or Bosch, and clean the EGR valve.

ŠKODA Superb III (3V) 2.0 TSI (CJXB)

Here P0302 is often accompanied by a code P0016 (camshaft misalignment), which indicates:

  • Timing chain stretch.
  • Worn chain tensioner or guide.
  • Problems with the variable valve timing system (VVT).

Repair: replacement of timing chain with tensioners (set INA 530 0539 10) and reset adaptations via VCDS.

ŠKODA Kodiaq 1.5 TSI (DADA)

On this engine (series EA211 Evo) P0302 can be caused by:

  • Malfunction of the pressure sensor in the intake manifold (G71).
  • Problems with the cooling system (overheating leads to detonation).
  • Turbine defect (oil leak into the intercooler).

Diagnostics: Check the intake manifold pressure (should be 0.3–0.7 bar at idle) and inspect the intercooler for oil.

These engines have a sensitive injection system TSI reacts to low-quality fuel with high sulfur content. If, after refueling, three-dimensionality occurs, drain the fuel, replace the filter and add an additive (for example, Liqui Moly Super Plus).-->

What happens if you ignore P0302?

Many drivers continue to drive with misfires, unaware of the consequences. On ŠKODA With a catalytic converter, ignoring P0302 results in:

  • 🔥 Overheating and melting of the catalyst (replacement cost from 50 000 ₽).
  • 🛢️ Increased oil consumption due to fuel entering the crankcase.
  • 💥 Cylinder detonations, which destroys pistons and rings.
  • ⚡ Damage to lambda probes (the price of a new sensor is from 8 000 ₽).

On diesel ŠKODA (for example, 2.0 TDI) long misfires lead to oil dilution with fuel, which causes oil starvation and turbine wear. In the worst case it may be necessary engine overhaul (from 150 000 ₽).

⚠️ Attention: On vehicles with the system Start-Stop (for example, ŠKODA Scala) error P0302 can block automatic engine shutdown - this protects the ECU from damage.

Prevention of error P0302 on ŠKODA

Preventing misfires is easier than eliminating their consequences. Follow these guidelines:

  • 🔧 Change spark plugs and coils regularly:
    • Spark plugs: every 30–60 thousand km (depending on type).
    • Reels: every 100–120 thousand km.
  • ⛽ Refuel at proven gas stations. Gasoline with lower octane number 95 provokes detonation.
  • 🛠️ Monitor the condition of the fuel system:
    • Change the fuel filter every 30 thousand km.
    • Clean the injectors every 50 thousand km.
  • 📊 Control the compression. Falling lower 11 bar (gasoline) or 24 bar (diesel) - signal for repair.

On ŠKODA with turbocharged engines (TSI/TDI) pay special attention crankcase ventilation system. A clogged PCV valve causes crankcase pressure to increase and oil to enter the combustion chambers, causing a misfire. Clean it every 40–50 thousand km.

It is also recommended to carry out once a year computer diagnostics with checking the adaptations of injectors and coils. On ŠKODA with the system DSG This will help avoid false alarms related to the transmission.

FAQ: Frequently asked questions about error P0302 on ŠKODA

Is it possible to drive with P0302?

Short term - yes, but no more 100–200 km. Driving for a long time with misfires will damage the catalyst and lambda probes. If the shaking is severe, it is better to call a tow truck.

How much does it cost to fix P0302 in the service?

The cost depends on the reason:

  • Replacing spark plugs/coils: 3 000–8 000 ₽.
  • Cleaning the injectors: 5 000–12 000 ₽.
  • Cylinder head repair (valve grinding): 20 000–40 000 ₽.
  • Catalyst replacement: 40 000–100 000 ₽.

Why did the P0302 error remain after replacing the coil?

Possible reasons:

  • Poor quality coil (check resistance).
  • Problems with the ECU (adaptation reset required).
  • Air leakage through the intake manifold gasket.
  • Faulty injector or low compression.

Check all systems with a comprehensive scanner (for example, VCDS).

Can bad gasoline cause P0302?

Yes, fuel with low octane or impurities will cause detonation and misfire. If the error appears after refueling:

  1. Drain the fuel.
  2. Fill up with quality gasoline (AI-98).
  3. Add injector cleaner (eg Liqui Moly Systempflege).

Usually the error disappears after 1-2 full refills with good fuel.

How to reset error P0302 after repair?

To reset an error:

  1. Connect the diagnostic scanner (VCDS, OBDeleven).
  2. Select block 01 — Engine.
  3. Click Clear DTC.
  4. Start the engine and let it idle for 5-10 minutes.

If the error is returned, the problem is not resolved.