Nissan Almera N16 will not start: a complete analysis of the reasons and solutions

Nissan Almera N16 (2000-2006) is a reliable car, but even it is not immune to starting problems. If your the engine won't start, do not rush to panic: in 80% of cases, standard faults are to blame, which you can fix yourself. In this article we will analyze all possible reasons - from a banal battery discharge to complex breakdowns of the fuel system, and we will also give step by step instructions for diagnostics and repair.

Feature Almera N16 — sensitivity to the quality of fuel and electronics. For example, on models with QG16DE and QG18DE engines, the crankshaft position sensor often fails, which leads to a complete startup failure without errors on the dashboard. We have collected the experience of car owners and service technicians to help you save time and money.

1. Check the battery and electrical system

The first thing to exclude is eating problems. On Almera N16 The weak point is the alternator (especially on cars older than 2003), which can undercharge the battery. If you hear when you turn the key relay clicks, but the starter does not turn, either the battery or the contacts are to blame.

How to check:

• 🔋 Terminal voltage (with ignition off): there should be 12.6–12.8 V. If below 12.2 V — the battery is discharged.
• 🔌 Terminal oxidation: clean with sandpaper and lubricate Li-Quid Moly or similar lubricant.
• 🔄 Generator check: When the engine is running, the voltage should be 13.8–14.4 V. If less, the generator is faulty.
• 🚨 Starter fuse (F10, 10A in the block under the hood): often burns out due to a short circuit.

⚠️ Attention: If after replacing the battery the car starts, but a day later it won’t start again - look for leakage current. On Almera N16 common culprits: alarm system, radio or comfort unit (under the steering wheel).

2. Starter: why doesn’t it turn or click?

If you hear when you turn the key single clicks, but the starter does not rotate - the problem is solenoid relay or worn brushes. On Almera N16 starter Mitsubishi SR4-12V serves on average 150–200 thousand km, but may fail earlier due to moisture.

Diagnostics:

1. Check ground wire from the battery to the body (often oxidizes under the bolt).
2. Tap the starter with a hammer (not too hard!). If it starts working after that, the brushes are to blame.
3. Call starter winding multimeter: the resistance should be 0.1–0.5 Ohm.

Symptom	Probable Cause	Solution
Clicks, but the starter does not turn	Defective solenoid relay	Replacement of relay or starter assembly
Starter turns slowly	The battery is discharged or the brushes are worn out	Charge the battery or replace the brushes
Starter does not respond to key	Open circuit or faulty ignition switch	Ring the wires, check the lock

3. Immobilizer and alarm: hidden blockers

On Almera N16 installed standard immobilizer Nissan NATS, which can block startup if there is a failure in the key chip or antenna. If on the dashboard red key flashes — the problem is precisely in the immo. The culprit could also be abnormal alarm (For example, StarLine or Pandora), which blocks the ignition circuit.

How to check:

• 🔑 Try it second key - if the car starts, the problem is in the first chip.
• 📡 Check it out immobilizer antenna (located around the ignition switch). Contacts often oxidize.
• 🚗 If an alarm is installed, turn it off emergency way (usually with the button Valet under the torpedo).

⚠️ Attention: If after turning off the alarm the car starts, but after a while it stalls again - check fuel pump lock relay (contacts in the block under the hood often burn out).

How to reset immobilizer error on Almera N16

To reset the NATS error you need to: 1) Insert the key into the ignition switch. 2) Turn on the ignition (do not start!). 3) Wait 10 minutes - the immo light should go out. 4) Turn off the ignition, remove the key, reinsert it and try to start it. If this does not help, diagnostics with a scanner is required (for example, Launch X431).

4. Fuel system: from the fuel pump to the injectors

If the starter turns, but the engine does not catch, the problem is fuel supply. On Almera N16 weak points:

• 🛢️ Gasoline pump (resource 100–150 thousand km): often jams due to dirt in the tank.
• 🔧 Fuel pressure regulator (located on the fuel rail): if there is a malfunction, the engine does not start or stalls.
• 💉 Injectors: clogged when using low-quality gasoline.

Diagnostics:

1. Listen fuel pump whirring when the ignition is turned on (in the rear seat area). If there is silence, the pump is not working.
2. Check fuel rail pressure: must be 2.8–3.2 bar (the pressure gauge is connected to the fitting on the ramp).
3. If there is pressure, but the engine does not start - check spark (see next section).

5. Ignition system: spark plugs, coils, wires

If fuel is supplied, but the engine does not catch, check ignition system. On Almera N16 with engines QG16DE/QG18DE often fail:

• ⚡ Ignition coils (especially on cars after 2004).
• 🔥 Spark plugs - recommended resource 30–50 thousand km, but in practice they can last 100 thousand km.
• 📡 Crankshaft position sensor (CPS) — if it malfunctions, the engine will not start, but the error may not be displayed.

How to check:

1. Unscrew the spark plug and check spark: apply it to the ground and turn it with the starter. If there is no spark, the problem is in the coil or wires.
2. Swap places ignition coils (for example, 1st and 4th cylinders). If the non-working cylinder has changed, the coil is faulty.
3. Call high voltage wires: there must be resistance 5–10 kOhm.

Symptom	Reason	Solution
The engine stalls and won't start	Ignition coil is faulty	Replacing the coil (original Nissan 22448-4M015)
No spark on all spark plugs	The ignition module or DPKV is faulty	Diagnostics with a scanner, sensor replacement
There is a spark, but the engine does not catch	Clogged injectors or low compression	Cleaning injectors, measuring compression

6. Sensors and ECU: hidden faults

If all previous checks have failed, the problem may lie in electronic control unit (ECU) or sensors. On Almera N16 Most often they fail:

• 📊 Mass air flow sensor (MAF) - If there is a malfunction, the engine may not start or may operate intermittently.
• 🌡️ Coolant temperature sensor (DTOZH) - if he is lying, the ECU is preparing the mixture incorrectly.
• 🔧 Camshaft position sensor (CPR) - if it fails, the engine will not start.

Diagnostics:

1. Connect diagnostic scanner (For example, ELM327) and check the error codes. On Almera N16 common mistakes: P0340 (DPRV), P0100 (DFID).
2. Check ECU power supply (fuse ECCS, 10A in the cabin block).
3. If the ECU is silent, check mass on the body (often oxidizes under the ECU).

⚠️ Attention: If after washing the engine or heavy rain the car stops starting, check moisture entering the ECU. On Almera N16 The control unit is located in the wrong place (under the windshield), and water often causes a short circuit.

7. Mechanical failures: timing belt, compression, valves

If the engine does not start, but the starter turns vigorously, and there is a spark and fuel, check mechanical part. On Almera N16 with mileage over 150 thousand km common problems:

• 🔗 Broken timing belt - engines QG16DE/QG18DE at break valve bend!
• 💨 Low compression (norm: 12–14 bar in all cylinders).
• 🔩 Rotating the liners - happens when overheating or oil starvation.

How to check:

1. Remove timing belt cover and check its integrity. If the belt is broken - Do not try to start the car, otherwise you will bend the valves!
2. Measure compression compression gauge. If in one cylinder the value is lower 10 bar - a problem with the piston or valves.
3. Check engine oil — if the level is critically low or the oil is black, the bearings may rotate.

What to do if the timing belt breaks on Almera N16

If the belt breaks while driving:

1) Stop immediately and do not try to start the car!

2) Tow the car to a service center.

3) On QG16DE/QG18DE engines when the timing belt breaks valves are guaranteed to bend, therefore, cylinder head repair will be required (replacement of valves, grinding in, checking guides).

Repair cost: from 30,000 rubles (depending on the region).

FAQ: Frequently asked questions about Almera N16

The car does not start after replacing the battery. What's the matter?

On Almera N16 may reset after disconnecting the battery throttle adaptation. To reset the error:

1. Turn on the ignition for 10 seconds (do not start!).
2. Turn off the ignition, wait 30 seconds.
3. Try starting the car.

If it doesn't help, check ECU fuse (sometimes it crashes during a power surge).

The starter turns, but the engine does not catch. What to do?

Check in order:

1. Spark (unscrew the spark plug and check for ground).
2. Fuel (listen to the fuel pump, measure the pressure in the rail).
3. Crankshaft sensor (check with a multimeter).
4. Compression (if low, the engine will not start).

If everything is ok, remove it distributor cover (1.6 liters) or check ignition coils (1.8 liters).

After washing the engine the car will not start. What to do?

Most likely water got into the electronics. Actions:

1. Blow with compressed air ECU, ignition coils And sensor connectors.
2. Check fuses (especially ECCS And IGN).
3. If the car does not start, disconnect negative battery terminal for 10 minutes to reset errors.

If after this the engine does not start, take the car for diagnostics (it may have burned out ignition module or ECU).

Which fuel pump is better to install on Almera N16?

Original number: Nissan 17040-4M000 (cost ~8,000 rub.). Analogues:

• Bosch 0 580 454 035 — reliable, but expensive (~6,500 rubles).
• JP Group 1118700200 - a budget option (~3,500 rubles), but the resource is less.
• Denso 950-0101 — optimal in terms of price/quality (~5,000 rubles).

When replacing, be sure to clean the fuel pump mesh and check tightness of fuel pipes!

Is it possible to start the Almera N16 from a pusher?

Theoretically you can, but:

• On automatic (automatic transmission) — it's impossible! Problems with the box are guaranteed.
• On mechanics (manual transmission) - only if they are working properly clutch And starter.
• If the problem is DPKV or ECU - the pusher won't help.

Instructions for manual transmission:

1. Turn on second gear.
2. Turn on the ignition.
3. Accelerate the car to 10–15 km/h and quickly release the clutch.

If the engine does not start after 2-3 attempts, look for a deeper reason (see sections above).