Where is the crankshaft sensor located on Nissan Almera: location, check and replacement

The crankshaft position sensor (CPS) is one of the key elements of the engine management system Nissan Almera. Its malfunction leads to malfunctions of the engine: from difficulty starting to a complete stop. Owners Almera N16, G15 And G11 Often faced with the question: where exactly is this sensor located and how to get to it? The answer depends on the generation of the car and the type of engine installed.

In this article you will find exact layout diagrams of DPKV for different modifications Almera, including photos indicating the fastenings. We will also look into signs of trouble, diagnostic methods with a multimeter and step-by-step replacement instructions. Particular attention is paid unique nuances of access to the sensor on engines QG15DE And HR15DE, where its location differs from the classical one.

1. Purpose and operating principle of the crankshaft sensor

The crankshaft position sensor (CPS) is inductive or Hall sensor, which reads data on the rotation speed and angular position of the crankshaft. Information is transmitted to ECU (electronic control unit), which is based on it:

• 🔹 Corrects ignition timing — ensures optimal ignition of the fuel mixture.
• 🔹 Controls fuel injection — synchronizes the operation of the injectors with the valve timing.
• 🔹 Controls the operation of the variable valve timing system (on engines with VVT).
• 🔹 Detects misfires and activates emergency operation mode in case of malfunction.

On Nissan Almera Two types of sensors are installed: inductive (on older models) and on the Hall effect (on new ones, for example, Almera G15 with HR15DE). The first type generates a signal due to a change in the magnetic field as the teeth of the master disk pass through. The second one reacts to changes in voltage when a semiconductor wafer crosses a magnetic field.

2. Location of the crankshaft sensor on Nissan Almera by generation

DPKV location varies by generation Almera and engine type. Below are exact coordinates for each option.

2.1. Nissan Almera N16 (2000–2006, QG15DE engine)

On Almera N16 with motor QG15DE crankshaft sensor is located on the back of the cylinder block, next to the flywheel. It is accessible from the gearbox side:

• 🔧 Remove the air filter - this will free up space for maneuvers.
• 🔧 Disconnect the power connector sensor (gray chip).
• 🔧 Unscrew the fastening bolt key on 10 mm.

Visual reference: the sensor is located opposite the setting disk on the flywheel, which has 60 teeth (2 missed for synchronization).

2.2. Nissan Almera G15 (2012–2019, HR15DE engine)

On Almera G15 with engine HR15DE DPKV postponed to the front of the cylinder block, next to the crankshaft pulley. Features:

• 🔧 Removal of right front wheel required and fender liner for easy access.
• 🔧 The sensor is attached with one bolt to 10 mm and has a plastic body.
• 🔧 Black power connector with a latch - it must be released before disconnecting.

Important: on HR15DE The sensor is located at an angle of ~45° to the cylinder block, which complicates its visual search. Focus on the wiring harness that runs from the ECU to the front of the engine..

2.3. Nissan Almera Classic (G11, K4M engine)

On Almera Classic with motor K4M (1.6 l) DPKV installed on the oil pump cover, to the right of the cylinder block (in the direction of travel). Access:

• 🔧 Remove engine protection (if installed).
• 🔧 Unscrew the two sensor mounting bolts key on 10 mm.
• 🔧 Loosen the clamp securing the wiring harness for free removal.

What is the difference between DPKV on Almera N16 and G15?

On N16 (QG15DE) inductive type sensor and reads the signal from the flywheel, whereas on G15 (HR15DE) A Hall sensor is used that works with the crankshaft pulley. This affects the waveform and diagnostic methods.

3. Signs of a faulty crankshaft sensor

A faulty DPKV manifests itself characteristic symptoms, which are difficult to confuse with other breakdowns. Main features:

Symptom	Probable Cause	Additional checks
The engine does not start, the starter turns	There is no signal from the DPKV → the ECU does not “see” the crankshaft position	Check the sensor power supply (+12V on contact)
Floating idle speed	Unstable signal due to damaged wiring or dirty sensor	Check the waveform with an oscilloscope
Loss of power, jerking during acceleration	Ignition and injection synchronization failure	Read errors with the scanner (codes P0335, P0336)
Check Engine Lights On and Off	Periodic loss of signal (oxidation of contacts, cracks in wires)	Test the circuit with a multimeter

Error codesassociated with DPKV on Nissan Almera:

• 🔴 P0335 — sensor circuit malfunction;
• 🔴 P0336 — signal out of acceptable limits;
• 🔴 P0320 — there is no signal from the sensor.

⚠️ Attention: On Almera G15 with HR15DE code P0335 may appear when the drive disc on the crankshaft pulley is damaged. Before replacing the sensor, visually inspect the disc for chips or misaligned teeth.

4. How to check the crankshaft sensor with a multimeter

Diagnosis of DPCV includes winding resistance check (for inductive sensors) and supply voltage (for Hall sensors). You will need a multimeter with ohmmeter and voltmeter mode.

4.1. Checking the inductive sensor (Nissan Almera N16)

1. 🔧 Remove the sensor from the engine.
2. 🔧 Connect the multimeter probes to the sensor terminals (polarity is not important).
3. 🔧 Measure winding resistance:
   • ✅ Norm: 500–700 Ohm (for QG15DE).
   • ❌ Open circuit or short circuit: 0 ohm or ∞.

4.2. Checking the Hall sensor (Nissan Almera G15)

1. 🔧 Without removing the sensor, disconnect the connector.
2. 🔧 Turn on the ignition (without starting the engine).
3. 🔧 Measure voltage between +12V (red wire) and mass (black wire):
   • ✅ Norm: 11.5–12.5 V.
   • ❌ Deviation: power supply or ECU problems.

Additional test: If the multimeter shows normal, but the symptoms remain, check the sensor with an oscilloscope. Ideal signal should have smooth peaks without gaps. On Almera G15 the signal amplitude is ~0.5–1.5 V.

⚠️ Attention: On engines HR15DE after 2015, the sensor may have built-in signal amplifier. If it malfunctions, the winding resistance will be normal, but the signal will not be sent to the ECU. In this case, only replacement will help.

5. Step-by-step instructions for replacing the crankshaft sensor

Replacing DPKV with Nissan Almera does not require special skills, but it is important to follow sequence of actions and use the right tool. Below are universal instructions taking into account the nuances for different engines.

5.1. Required Tools

• 🔧 Key on 10 mm (head or horn).
• 🔧 Screwdriver with a flat blade (for pressing the connector lock).
• 🔧 Dielectric grease (for processing contacts).
• 🔧 Rags and contact cleaner (WD-40 or equivalent).

5.2. Replacement procedure

1. 🔧 Disconnect the battery (remove the negative terminal).
2. 🔧 Provide access to the sensor:
   • For N16: Remove the air filter.
   • For G15: Remove the right wheel and fender liner.

🔧 Disconnect the power connector (press the lock and pull up).

🔧 Unscrew the fastening bolt key on 10 mm.

🔧 Remove the sensor, rocking it from side to side (do not force yourself!).

🔧 Install a new sensor, aligning it with the seat. Tighten the bolt to torque 8–10 Nm.

🔧 Connect the connector and return all removed elements to their place.

5.3. Calibration after replacement

On most Nissan Almera after replacing the DPKV no calibration required — The ECU automatically adapts to the new sensor. However, on models with VVT (For example, HR15DE) recommended:

1. 🔧 Reset errors with the scanner (for example, ELM327).
2. 🔧 Start the engine and let it run 5–10 minutes at idle speed.
3. 🔧 Check again for errors.

6. Selecting a crankshaft sensor: original vs analogues

When purchasing a new DPKV for Nissan Almera important to consider sensor type (inductive/Hall) and engine compatibility. Below is a table with original articles and proven analogues.

Model Almera	Engine	Original article	Recommended analogues	Price, rub.
N16	QG15DE	23731-4M500	Febi 21616, Bosch 0 261 210 115	1 200–1 800
G15	HR15DE	23731-JK00A	Denso 550-0103, NGK 19001	1 500–2 200
Classic (G11)	K4M	23731-4M510	Valeo 587033, Hella 6PT 009 101-021	900–1 400

What to look for when purchasing:

• 🔍 Sensor type: on HR15DE Only a Hall sensor is installed (inductive will not work!).
• 🔍 Wire length: on G15 tourniquet shorter than N16.
• 🔍 Availability of O-ring - it should come included.

⚠️ Attention: There are counterfeit branded sensors on the market Bosch And Denso. Original parts have a laser marking of the article number and a hologram on the packaging. Check the certificates with the seller!

7. Common mistakes when replacing and how to avoid them

Even experienced car owners make mistakes when working with DPKV. Let's consider typical mistakes and ways to prevent them.

• 🚫 Using the wrong sensor:

  On QG15DE And HR15DE The sensors are similar in appearance, but have different calibrations. Make sure the part number matches the vehicle's VIN number.

• 🚫 Damage to the master disk:

  If you remove the sensor carelessly, you can hit the disk on the flywheel or pulley. This will lead to uneven signal and error P0336.

• 🚫 Incorrect bolt tightening:

  Weak tightening causes vibration of the sensor, and excessive tightening causes deformation of the housing. Use a torque wrench (8–10 Nm).

• 🚫 Ignoring errors after replacement:

  If Check Engine continues to light, check:

  • Integrity of wiring (especially around the connector).
  • Correct installation (the sensor should “look” at the teeth of the disk).
  • The condition of the disc itself (are there any chips or rust).

What should I do if the engine does not start after replacing the sensor?

1. Check the connection of the connector - it should click when locked.

2. Make sure the sensor is installed flush with the block (not recessed or protruding).

3. Reset errors with a scanner - sometimes the ECU “freezes” in emergency mode.

4. Check the sensor power supply (+12V on the red wire).

FAQ: Frequently asked questions about the crankshaft sensor on Nissan Almera

Is it possible to drive with a faulty DPKV?

No. The crankshaft sensor is a critical element. If it fails, the engine will either not start or will work with severe interruptions, which will lead to:

• 🔥 Overheating of the catalyst (due to incorrect fuel mixture).
• 🔥 Damage to the piston group (detonation).
• 🔥 ECU failure (due to chaotic signals).

Allowed one-time launch to transport the car to a service center (no more than 5–10 km).

How to distinguish an original sensor from a fake?

Original sensors Nissan have:

• 🔍 Laser engraving of the article on the body (not a sticker!).
• 🔍 Plastic connector with metal contacts (counterfeits often have plastic contacts).
• 🔍 Black O-ring (for analogues it is red or gray).
• 🔍 Hologram on packaging with serial number.

Check the weight of the part: fakes are usually lighter by 10–15 g.

What happens if the sensor is installed incorrectly?

Incorrect installation leads to:

• 🚨 No signal (the engine will not start).
• 🚨 False errors (P0320, P0335).
• 🚨 Mechanical damage sensor or drive disk.

Main installation errors:

• 🔧 Installation with a skew (the sensor should fit into the seat without effort).
• 🔧 Insufficient tightening of the bolt (vibration distorts the signal).
• 🔧 Contact contamination (use dielectric grease).

Is it possible to clean the crankshaft sensor?

Cleaning is only possible for inductive sensors (on N16). Use:

• 🧹 Lint-free cloth And isopropyl alcohol (not acetone!).
• 🧹 Toothbrush for cleaning connector contacts.

For Hall sensors (on G15) cleaning useless - in case of malfunction, only replacement.

⚠️ Attention: Do not use wire brushes or abrasives as they will damage the protective coating on the sensor.

What gap should be between the sensor and the drive disk?

Optimal clearance:

• 📏 For QG15DE (inductive sensor): 0.5–1.5 mm.
• 📏 For HR15DE (Hall sensor): 0.3–1.0 mm.

The gap is adjustable O-ring thickness. When replacing, use the ring supplied with the new sensor.