Crankshaft position sensor (DPKV) - one of the key elements of the engine management system Nissan Almera N16. Its malfunction leads to engine malfunctions, difficult starting or a complete stop of the car. Unlike many modern models, where the sensor is integrated into complex electronic systems, Almera N16 (with engines QG15DE And QG18DE) its replacement is available even to novice car owners with a minimum set of tools.

In this article we will analyze not only the replacement process, but also how to accurately diagnose the problemso as not to waste time replacing a working sensor. You will learn what errors the ECU gives when the DPKV breaks down, how to check the sensor with a multimeter, and why even a new sensor may not solve the problem if you do not take into account the installation features. We will pay special attention to the typical mistakes that owners make when doing their own repairs - from incorrect clearance to ignoring the condition of the wiring.

Symptoms of a faulty crankshaft sensor Nissan Almera N16

Symptoms of DPKV failure are often confused with fuel system or ignition problems. However, there are a number unique features, which directly point to the sensor:

  • 🔴 The engine starts only after several attempts or does not start at all (the starter turns, but there is no flash in the cylinders).
  • 📉 Floating speed at idle - the tachometer needle jumps chaotically in the range of 500–1500 rpm.
  • ⚡ Jerks and dips during acceleration, especially at speeds of 60–90 km/h, accompanied by a fire CHECK ENGINE.
  • 🚗 Spontaneous engine shutdown while driving or at traffic lights.
  • 🔧 ECU errors: P0335 (DPKV circuit malfunction), P0336 (signal out of acceptable limits) or P0320 (no signal).

Important: on Almera N16 with engine QG18DE faulty DPKV may appear false detonation signal — The ECU incorrectly adjusts the ignition timing, which leads to loss of power. If you notice that your car starts to pull harder at high speeds, but there are no other symptoms, first check the crankshaft sensor.

⚠️ Attention: If the lights on the dashboard light up at the same time CHECK ENGINE And OIL PRESSURE, do not rush to change the DPKV. This combination may indicate problems with the oil pump or a clogged oil receiver - a comprehensive diagnosis is required.

Crankshaft sensor diagnostics: how to confirm the malfunction

Before proceeding with replacement, make sure that the problem is with the sensor. On Nissan Almera N16 There are three diagnostic methods:

  1. Reading errors scanner (for example, ELM327 or Launch CReader). Errors P0335–P0338 directly indicate DPKV, but sometimes they can be false due to damaged wiring.
  2. Checking with a multimeter:
    • 🔋 The resistance of the sensor winding must be within 550–750 Ohm (for original sensor Nissan 23731-4M000).
    • 🔌 Check the power circuit: between contacts 1 And 3 connector (with the ignition on) should be 12 V.
  3. Visual inspection:
    • 🔍 Presence of metal shavings or oil at the end of the sensor.
    • 🔌 Oxidation or damage to contacts in the connector.
    • 🛠️ Cracks on the sensor body (especially if it has previously been subject to shock).

If the sensor appears to be in good order, but errors persist, check clearance between sensor and flywheel ring gear. On Almera N16 it should be 0.5–1.2 mm. Increased clearance (due to worn crankshaft bearings or deformed mounting) results in a weak signal.

📊 How do you diagnose problems in a car?
  • On your own, using a scanner
  • I contact the service
  • I use advice from the Internet
  • I trust only the official dealer

Selecting a crankshaft sensor for Nissan Almera N16: original vs analogues

Original sensor from Nissan has an article number 23731-4M000 (for engines QG15DE/QG18DE). Its average price is 2500–3500 rubles. However, there are high-quality analogues on the market that are cheaper:

Manufacturer Article Price, rub. Features
Bosch 0 261 210 115 1800–2200 High build quality, suitable for extreme temperatures
Denso 550-0101 2000–2400 Original supplier for Nissan, exact compatibility
Febi 23731 1200–1500 Budget option, but more often counterfeited
Siemens VDO PMH 6.0 1600–1900 A good alternative to the original, but check the packaging for authenticity

⚠️ Important: When purchasing an analogue, pay attention to magnetic properties of the core. Cheap knockoffs often have a weak magnet, resulting in an unstable signal. You can check it with a simple test: the original sensor must confidently hold the paper clip at the end.

Also keep in mind that Almera N16 after 2003, sensors with a modified connector were installed (article no. 23731-4M010). They are interchangeable, but may require some wiring modifications.

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Before buying a sensor, remove the old one and compare it with the new one in weight - the original weighs about 120 grams, and fakes are often 20-30% lighter.

Tools and preparation for replacing the crankshaft sensor

To replace DPKV with Nissan Almera N16 you will need:

  • 🔧 Head on 10 mm with extension and ratchet handle.
  • 🔨 Flat-head screwdriver (for removing the connector retainer).
  • 🧲 Magnetic grip (so as not to drop the fastening bolt into the pallet).
  • 🔍 Flashlight or lamp with a flexible leg - lighting in the flywheel area is extremely limited.
  • 🧴 WD-40 or similar cleaner (for treating bolt threads).
  • 📏 Thick probe 0.5 mm to check the gap.

Before starting work:

Disconnect the negative battery terminal|Remove the engine protection (if installed)|Clean the area around the sensor from dirt|Prepare a new sensor and tools-->

⚠️ Critical: Replace with cold engine. On a hot engine, the plastic housing of the sensor may be deformed during dismantling, and the metal parts of the flywheel may cause burns.

Also note that on Almera N16 With air conditioning, access to the sensor is difficult due to the compressor. In some cases, you will have to temporarily loosen its fastening (without completely dismantling the tubes).

Step-by-step instructions for replacing the crankshaft sensor

The replacement process takes 30–60 minutes depending on experience. Follow the instructions strictly step by step:

  1. Removing the old sensor:
    1. Disconnect the power connector by pressing the latch (it is located on the side, under the plastic latch).
    2. Unscrew the bolt securing the sensor with the head on 10 mm. Be careful - the bolt often sticks, do not use excessive force.
    3. Carefully remove the sensor by rocking it from side to side. If it does not give in, treat the seat WD-40 and wait 5-10 minutes.
  2. Cleaning the seat:
    • Remove the remains of the old gasket (if there was one).
    • Check the flywheel ring gear for damaged teeth - these may cause false signals.
    • Clean the connector contacts from oxidation (use alcohol or a special cleaner).
  3. Installing a new sensor:
    1. Check the presence of the O-ring on the new sensor. If you don't have it, use the old one (provided it's not damaged).
    2. Install the sensor into the seat until it stops, then tighten the mounting bolt. Tightening torque - 8–10 Nm (do not overtighten!).
    3. Connect the connector. Make sure that the latch clicks into place.
  4. Checking the gap:

    Using a feeler gauge 0.5 mm make sure that the gap between the end of the sensor and the ring gear is correct. If the dipstick does not pass or, on the contrary, dangles, adjustment is required (lining the washers or replacing the fastener).

After installation, connect the battery and start the engine. Error CHECK ENGINE may be stored in the ECU memory - reset it with a scanner or by disconnecting the battery for 10 minutes.

What should I do if the error does not disappear after replacing the sensor?

If the code P0335 left, check:

1. Integrity of the wiring from the sensor to the ECU (often frays near the exhaust manifold).

2. Condition of the flywheel ring gear - chipped or worn teeth lead to signal failures.

3. The presence of metal shavings at the end of the new sensor (may indicate wear of the crankshaft bearings).

4. Correct connection of the connector - sometimes the contacts oxidize immediately after installation.

If the problem persists, check the sensor supply voltage (between the contacts 1 (+12V) And 3 (mass)) with the ignition on.

Typical mistakes when replacing DPKV and how to avoid them

Even experienced car owners make mistakes that lead to repeated malfunctions. Here are the most common:

  • 🔧 Tightening the fastening bolt — leads to deformation of the sensor body and a change in the gap. Use a torque wrench or hand tighten with moderate force.
  • 🧲 Ignoring metal shavings at the end of the sensor. It indicates wear of the crankshaft bearings - in this case, replacing the DPKV will give a temporary effect.
  • 🔌 Connector damage when disconnected. On Almera N16 The latch is fragile - press it strictly from the side, not from above.
  • 📏 Unchecked clearance. Even a new sensor may not work if the gap exceeds 1.2 mm.
  • 🚗 Replacement without resetting ECU adaptations. After replacing the sensor, it is recommended to reset the long-term fuel trims (via a scan tool or by disconnecting the battery).
⚠️ Attention: If after replacing the sensor the engine begins to run unstably at high speeds, check connector polarity. On non-original sensors contacts 1 And 2 sometimes switched places - this leads to signal inversion.

When replacing the sensor does not solve the problem: alternative reasons

If symptoms of DPKV malfunction persist after replacement, look for the problem in the following components:

Component Symptoms of a problem Diagnostics
Wiring from DPKV to ECU Intermittent errors P0335that appear and disappear Test the circuit with a multimeter, check for opens and shorts
Flywheel ring gear Jerks during acceleration, error P0336 (signal out of range) Visual inspection through the inspection window in the clutch housing
ECU (control unit) Multiple errors, unstable engine operation Checking the power supply of the unit, flashing or replacing
Camshaft sensor (DPRV) Errors P0340–P0344, difficult starting Checking resistance (200–1000 Ohm) and power circuit

On Almera N16 with a mileage of more than 200 thousand km it often wears out crankshaft damper - rubber layer between the pulley and the hub. This leads to beating and unstable DPKV signal. You can check by observing the pulley while the engine is running: if it “walks” relative to the axis, the damper must be replaced.

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If after replacing the DPKV and checking all circuits the problem persists, pay attention to engine weight. On Almera N16 it often oxidizes in the area where it is attached to the body (under the battery), which leads to “floating” errors.

FAQ: Frequently asked questions about replacing the crankshaft sensor with Nissan Almera N16

Is it possible to drive with a faulty DPKV?

Technically the engine can run, but this is highly discouraged. If the sensor is faulty, the ECU goes into emergency mode, which leads to:

  • Increased fuel consumption (up to 30%).
  • Risk of catalyst damage due to incorrect fuel mixture.
  • Random misfires that can damage pistons or valves.

If the sensor fails on the way, get to the repair site by tow truck or tow truck.

Which sensor is better to choose: original or analogue?

Original sensor (23731-4M000) guarantees 100% compatibility, but analogues from Bosch or Denso often not inferior in quality. The main thing is to avoid cheap counterfeits (for example, without branded packaging or with typos in the article). Before purchasing please check:

  • The presence of a hologram or protective stickers on the packaging.
  • Winding resistance (should be 550–750 Ohms).
  • Magnetic properties of the core (should attract a paper clip).
Do I need to reset errors after replacing the sensor?

Yes, but not always right away. After replacement:

  1. Start the engine and let it idle for 5-10 minutes.
  2. If the error P0335 has not disappeared, reset it using a scanner or disconnecting the battery.
  3. Drive 20–30 km - sometimes the error disappears only after driving.

If the error returns, the problem is not with the sensor (see section "When replacement does not help").

Is it possible to replace the DPKV without a pit or lift?

Yes, but it's less convenient. On Almera N16 The sensor is located at the bottom of the cylinder block, next to the clutch. To get to it without a hole:

  • Jack up the front of the car and install jack stands.
  • Remove the right front wheel and engine protection (if equipped).
  • Use a mirror with a flexible handle and a flashlight for illumination.

⚠️ Be careful - when working under a car on a jack, always use stops to protect yourself!

What happens if the sensor is installed incorrectly?

The consequences depend on the type of error:

  • Skewed sensor → the signal is distorted, the engine stalls or stalls.
  • Big gap (more than 1.2 mm) → weak signal, error P0336.
  • Small gap (less than 0.3 mm) → risk of mechanical damage to the sensor by the flywheel teeth.
  • Unplugged connector → the engine will not start, there will be an error P0335.

In all cases, repeated dismantling and adjustment of the installation is required.