Error 11 on Nissan: what does the P0301/P0300 code mean and how to fix the problem

Car owners Nissan - from compact Juke to family X-Trail - sooner or later they may encounter a mysterious error 11 on the dashboard. This code, which is often displayed as P0301 (misfire in cylinder 1) or P0300 (multiple misfires), indicates problems in the ignition or fuel supply system. But what exactly is hidden behind this error? Why does it appear at idle or during acceleration? And most importantly, is it possible to deal with it yourself without contacting the service?

In this article we will look at all possible causes of error 11 on Nissan, from banal wear of spark plugs to serious ECU malfunctions. You will learn how to properly diagnose a problem with or without a scanner, which parts to check first, and which Typical repair errors lead to the P0301 code reappearing after 1-2 weeks. And for the owners Qashqai J10/J11 And X-Trail T31/T32 We have prepared separate recommendations - these models are especially susceptible to this malfunction due to their design features.

What does error 11 (P0301/P0300) mean on Nissan

Code P0301 stands for "misfire in cylinder 1", and P0300 - how "random/multiple omissions". These errors are recorded by the ECU (electronic control unit) when the crankshaft position sensor detects uneven rotation of the engine. Simply put, one or more cylinders are not firing as they should - either the fuel is not igniting or is delayed in igniting.

On Nissan with engines HR16DE, MR20DE or QR25DE error 11 is often accompanied by the following symptoms:

• 🔥 Engine tripping - noticeable vibration at idle or during acceleration.
• ⚡ Power Loss — the car reacts poorly to the gas pedal, especially at low speeds.
• 💨 Increased fuel consumption — The ECU compensates for the misfires by enriching the mixture.
• 🚨 Lighting up of the check — the error may appear periodically or constantly.

It is important to understand that P0301 - this is not an independent malfunction, but consequence of another problem. For example, if the spark plug in the 1st cylinder is faulty, the ECU records the misfires and records an error. But the same error can appear due to air leaks, a faulty injector, or even ECU firmware.

The main causes of error 11 on Nissan

According to service center statistics, 80% of cases of error P0301/P0300 on Nissan are related to five key issues. We have ranked them in order from the easiest (and cheapest) to fix to the most difficult:

1. Spark plugs - wear, incorrect clearance or oil on the electrodes.
2. Ignition coils - insulation breakdown or winding break (especially important for Qashqai with engine MR20DD).
3. Injectors - clogging or leakage leading to over-enrichment of the mixture.
4. Air leak — cracks in the manifold, wear of gaskets or vacuum hoses.
5. Sensors — malfunction of the crankshaft position sensor (CKP) or camshaft (CMP).

The remaining 20% ​​is due to more rare causes: malfunction of high-voltage wires (on older models), timing problems, low fuel pressure or failures in the ECU firmware. For example, on Nissan Juke with turbo engine HR16DET error 11 often occurs due to dirty crankcase ventilation valve (PCV), which leads to an imbalance of pressure in the cylinders.

Why does error 11 appear more often on a cold engine?

When cold, the fuel mixture becomes richer, and the oil in the cylinders is more viscous. If there are problems with the spark plugs or coils, the leaks appear more clearly. Also, on a cold engine, air leaks are more often detected through cracks in the manifold, which, when heated, are “tightened” by the expansion of the metal.

How to diagnose error 11 without a scanner

Not everyone has a diagnostic scanner, but this does not mean that the cause of the error cannot be identified. Here step-by-step algorithm for self-check:

1. Check the spark plugs:
   • 🔧 Unscrew the spark plug from the 1st cylinder (from the timing side to HR16DE/MR20DE).
   • 🔍 Assess the condition of the electrodes: oil - problem with valve stem seals, soot - rich mixture or bad fuel, erosion - natural wear and tear.
   • 📏 Check the gap (should be 0.8–1.1 mm for most engines Nissan).
2. Swap the coils:
   • 🔄 Change the coil of the 1st cylinder with the coil of the 4th.
   • 🚗 If the error has moved to the 4th cylinder (P0304), the coil is at fault.
3. Check compression:
   • 🛠️ Measure the compression in the 1st cylinder (standard for QR25DE — 12–14 bar).
   • ⚠️ The difference between the cylinders is more 1 bar indicates problems with rings or valves.

If after these checks the problem is not found, you will have to dig deeper: check the injectors on a stand, look for air leaks using a smoke generator, or diagnose the sensors with an oscilloscope. But in 60% of cases, it is the spark plugs or coils that are to blame.

Step-by-step instructions for resolving error P0301

Once the cause is found, all that remains is to eliminate it. Below - detailed instructions for the most common cases. Let's start with the simplest thing - replacing the spark plugs.

1. Replacing spark plugs

For Nissan Qashqai J11 (2014–2021) with engine MR20DD candles fit NGK IFR6T11 or Denso FXE20HR11. Replacement algorithm:

1. Remove the decorative engine cover (unsnap the 4 latches).
2. Disconnect the ignition coil connectors (press the lock and pull up).
3. Unscrew the bolts securing the coils (the key is on 10).
4. Remove the coils and unscrew the spark plugs using a spark plug wrench. 16.
5. Install new spark plugs by first applying to the threads anti-seize paste (For example, Liqui Moly Kupfer-Spray).
6. Torque the spark plugs 20–25 Nm (you can’t over-tighten!).

⚠️ Attention: On engines HR16DE And MR20DE the spark plugs “stick” to the block head. If the candle does not go, do not apply force - use special puller or warm up the engine to operating temperature (the metal will expand and the spark plug will come out easier).

2. Checking and replacing ignition coils

Coils on Nissan often fail due to overheating or moisture. Signs of a faulty coil:

• 🔥 Cracks or melting on the case.
• 💧 Traces of oil or antifreeze inside the connector.
• 📉 Winding resistance is outside the norm (primary: 0.5–1.0 Ohm, secondary: 8–12 kOhm).

To replace the coil with X-Trail T32:

1. Disconnect the negative terminal of the battery.
2. Remove the intake manifold (at QR25DE You will need to unscrew 6 bolts).
3. Disconnect the coil connector and unscrew the mounting bolt.
4. Remove the coil and install a new one (original - Nissan 22448-JK00A).

💡 Advice: After replacing the coils, reset the errors using a scanner or by disconnecting the battery for 10 minutes. If the code P0301 appears again, the problem is not in the coils.

3. Cleaning the injectors

Clogged injectors are the third most common cause of error 11. To clean:

1. Remove the fuel rail (unscrew the 2 bolts on 10 and disconnect the fuel line).
2. Wash the nozzles in an ultrasonic bath or with a cleaner Wynn's Injector Cleaner.
3. Check the spray: the stream should be smooth, without drops.

If the injector leaks (does not hold pressure), it needs to be replaced. On Nissan original injectors go under the article number 16600-4M000 (for MR20DE).

Table: Symptoms and probable causes of error 11

Symptom	Probable Cause	Verification method
The error appears only when cold	Faulty ignition coil or spark plug	Swap coils, check spark plugs
Troubleshooting and error under load (during acceleration)	Clogged injector or low fuel pressure	Measure the pressure in the rail (standard: 3.5–4.0 bar)
Error P0301 + P0171 (lean mixture)	Air leak into the intake manifold	Checking with a smoke generator or spraying with a soap solution
The error is accompanied by a knocking sound in the engine	Timing problems (stretched chain, worn rollers)	Diagnostics of valve timing using a scanner
The error appears after refueling	Bad fuel or clogged fuel filter	Drain fuel, wash tank, replace filter

Common repair mistakes and how to avoid them

Many car owners trying to fix P0301, make mistakes that lead to the recurrence of the problem or worsening of the malfunction. Here the most common mistakes:

• 🔧 Replacing only one spark plug - if one spark plug is worn out, the rest are also on the verge. Need to change set!
• 💡 Ignoring P0300 Code — if there are multiple leaks, you need to look for a systemic problem (air leaks, fuel), and not rush to change the spark plugs.
• 🔥 Dragging candles - this leads to damage to the threads in the block head. Tightening torque: 20–25 Nm.
• 🚗 Failure to reset ECU adaptations — after replacing spark plugs or coils, you need to reset long-term fuel corrections (via a scanner or by disconnecting the battery).
• 🔍 Diagnostics by eye - Without checking compression, coil resistance and fuel pressure, repairs may be useless.

⚠️ Attention: On engines MR20DD (installed on Qashqai J11 And X-Trail T32) a common problem with oil in spark plug wells. If you see oil under the coils, do not limit yourself to replacing the spark plugs - check valve seals And guide bushings. Ignoring this problem leads to failure of the ignition coils!

💡

If the P0301 error returns after replacing the spark plugs and coils, be sure to check the compression and leaks of the intake manifold. In 30% of cases the problem lies there.

Features of error 11 on popular Nissan models

Some models Nissan have unique "sores"which lead to error P0301. Let's look at the most problematic ones:

1. Nissan Qashqai J10 (2007–2013) and J11 (2014–2021)

On Qashqai with engine MR20DE error 11 is often associated with:

• 🔥 Ignition coils - original (Nissan 22448-JK00A) serve ~100 thousand km, then they begin to “break through”.
• 💧 Oil in spark plug wells — valve seals are to blame (part number 13270-4M000).
• 🚗 Air leak through cracks in the plastic intake manifold (especially important for J10).

2. Nissan X-Trail T31 (2007–2013) and T32 (2014–2021)

On X-Trail with engine QR25DE error P0301 often appears due to:

• 🔧 Timing chain wear — a stretched chain disrupts the valve timing.
• 💨 Dirty PCV valve — leads to an imbalance of pressure in the crankcase.
• ⚡ Problems with the crankshaft position sensor - on T31 it often fails after 150 thousand km.

3. Nissan Juke (2010–2019) with HR16DET engine

On turbocharged Juke error 11 may be due to:

• 🔥 Overheating of coils - due to poor ventilation under the hood.
• 💣 Detonation - low octane gasoline or faulty knock sensor (Nissan 22060-4M200).
• 🚗 Turbine malfunction — oil leakage through the seals leads to clogging of the injectors.

💡 Advice for Juke owners: If P0301 is accompanied by a code P0299 (low boost pressure), check wastegate valve and turbine pipes for leaks.

FAQ: Frequently asked questions about error 11 on Nissan

Is it possible to drive with P0301?

Short term - yes, but not recommended. Long-term driving with misfires leads to:

• 🔥 Overheating of the catalyst (risk of melting).
• 💣 Accelerated wear of piston rings and valves.
• 🚗 Increased fuel consumption (up to +20%).

If the error appears rarely (for example, only when cold), you can go to a service center. If the engine is constantly shaking, it is better to call a tow truck.

How much does it cost to fix error 11 in the service?

The cost depends on the reason:

• 🔧 Replacing spark plugs: 1 500–3 000 ₽ (with work).
• ⚡ Replacement coil: 3 000–6 000 ₽ (original + work).
• 💧 Cleaning injectors: 4 000–8 000 ₽.
• 🚗 Air leak diagnostics: 2 000–5 000 ₽.

On Qashqai And X-Trail with engine MR20DE complex repairs are often required (spark plugs + coils + seals), which costs 15 000–25 000 ₽.

Could P0301 be caused by bad gasoline?

Yes, and this is one of the most insidious reasons. Low octane fuel or gasoline with impurities leads to:

• 🔥 Detonation (especially on turbo engines Juke And Qashqai 1.6 DIG-T).
• 💣 Clogging of nozzles (additives settle on the nozzles).
• ⚡ Formation of soot on candles and valves.

If the error appears after refueling, try:

1. Top up 100–200 ml injector cleaner (Liqui Moly Injection Reiniger).
2. Drive by 50–100 km at high speeds (3,000–4,000 rpm) for self-cleaning.
3. If that doesn't help, drain the fuel and flush the tank.

How to reset error P0301 without a scanner?

There are three ways:

1. Disabling the battery:
   • Remove the negative terminal at 10–15 minutes.
   • The ECU will reset the errors, but long-term adaptations will remain.
2. Reset via fuse (does not work on all models):
   • Take out the fuse ECU-IG 10A (in the salon block).
   • Wait 1 minute and install it back.
3. Driving in aggressive mode:
   • Accelerate to 100–120 km/h and quickly release the gas.
   • Repeat 2-3 times - sometimes the ECU resets the error after a system test.

⚠️ Attention: If the cause of the error is not resolved, it will return in 50–200 km mileage

What spark plugs are best for a Nissan with error code P0301?

The choice depends on the engine:

Engine	Recommended candles	Article	Gap, mm
HR16DE (Juke, Note)	NGK IFR6T11 or Denso FXE20HR11	90915-01254 / 22401-4M015	0.8–1.0
MR20DE (Qashqai, X-Trail)	NGK ILFR6H11 or Denso K20HR-U11	22401-4M025 / 19100-BM40A	1.0–1.1
QR25DE (X-Trail, Murano)	NGK IFR6A11 or Denso FK16HR11	22401-3M025 / 19100-AL50A	1.0–1.1

💡 Important: On engines with direct injection (MR20DD, HR16DET) use only iridium spark plugs — they can withstand high temperatures in the combustion chamber.