Where is the crankshaft sensor located on Nissan Almera Classic: search, replacement and diagnostics

The crankshaft position sensor (CPS) is one of the key elements of the engine management system Nissan Almera Classic. Its incorrect operation leads to ignition failures, unstable engine operation or complete startup failure. Owners of this model are often faced with the question: where exactly is this sensor located, how to check and replace it without contacting service?

In this article you will find exact layout of the DPKV for all modifications Almera Classic (including versions with engines QG15DE, QG16DE And QG18DE), as well as step-by-step diagnostic instructions. We'll look at what tools you'll need, how to avoid common mistakes when replacing, and what to look for when purchasing a new sensor. If your car suddenly stalls or lights up on the dashboard Check Engine with an error P0335 or P0336 - this information will be especially useful.

Design and principle of operation of the crankshaft sensor on Almera Classic

Crankshaft position sensor (CPS) on Nissan Almera Classic refers to inductive type. It reads data from a ring gear mounted on the crankshaft pulley and transmits a signal to the electronic control unit (ECU). Based on this data, the ECU determines:

• 🔹 exact moment of fuel supply to the cylinders;
• 🔹 ignition advance angle;
• 🔹 sequence of operation of injectors;
• 🔹 engine speed (for tachometer).

Feature of DPKV on Almera Classic - him non-demountable design. The sensor is a plastic case with a metal core and wires that are connected to the main harness through a connector. Unlike camshaft sensors, camshaft sensors have no moving parts, which increases its reliability, but does not eliminate the risk of failure due to mechanical damage or corrosion.

The signal from the sensor enters the ECU in the form analog pulse. As the crankshaft rotates, the teeth of the ring pass past the core, inducing an alternating voltage. If the sensor fails, the ECU loses synchronization with the engine, resulting in misfires, detonation or a complete stop of the engine.

The exact location of the crankshaft sensor: photo and diagram

On Nissan Almera Classic (including restyled versions) the crankshaft sensor is installed in bottom of cylinder block, next to the flywheel. The specific location depends on the engine type:

• 🔧 On engines QG15DE And QG16DE sensor is located right (in the direction of travel) from the oil filter, next to the timing drive.
• 🔧 On QG18DE The DPKV is shifted closer to the gearbox, but also remains in the lower part of the block.

For clarity, the location diagram is presented below (the reference point is the crankshaft pulley):

Engine	DPKV location	Search guide
QG15DE (1.5 l)	To the right of the oil filter	Near the timing drive, below the exhaust manifold
QG16DE (1.6 l)	To the right of the oil filter	Under the air conditioner pipe (if equipped)
QG18DE (1.8 l)	Closer to the gearbox	Above the starter, under the intake manifold

To get to the sensor you will need:

1. Remove engine protection (if installed).
2. Disconnect power connector from DPKV (the latch is fixed with a plastic tongue).
3. Unscrew fastening bolt (usually turnkey 10 mm).

What does the crankshaft sensor look like on Almera Classic?

The sensor is a cylindrical body ~5 cm long with a metal core at the end. Body color: black or dark grey. The connector is marked (for example, 23731-4M000 or 23731-4M010 for original spare parts).

Important! On some versions Almera Classic (especially with automatic transmission) access to the sensor is difficult due to the closely located pipes. In this case, it may be necessary to remove intake manifold or air conditioner tubes.

Signs of a faulty crankshaft sensor

Faulty DPKV on Nissan Almera Classic manifests itself with clear symptoms that are difficult to confuse with other breakdowns. Main features:

• ⚠️ Engine won't start (the starter turns, but there is no spark and no fuel injection).
• ⚠️ Floating speed at idle (from 500 to 1500 rpm).
• ⚠️ Misfires in one or more cylinders.
• ⚠️ Detonation when accelerating (noisy metallic knocks).
• ⚠️ Check Engine with errors P0335 (“DPKV circuit”) or P0336 (“Invalid DPKV signal”).

Critical feature: if the DPKV completely fails, the engine Almera Classic It won’t even start “from the pusher”. This differs from camshaft sensor faults, in which the engine may start but run rough.

Additional symptoms that indirectly indicate problems with DPKV:

• 🔋 Decrease in engine power (the car “does not pull” when overtaking).
• 🔥 Jerks when moving at a constant speed.
• 🔄 Spontaneous engine shutdown after starting.

How to check the crankshaft sensor on Almera Classic yourself

Diagnosis of DPCV does not require sophisticated equipment. You will need:

• 🔧 Multimeter (with resistance and AC voltage measurement function).
• 🔧 Screwdriver with a flat blade (for removing the connector).
• 🔧 Metal object (such as a wrench) for induction test.

Check procedure:

1. Visual inspection:
   • Check the integrity of the sensor housing (cracks, chips).
   • Make sure the core is not contaminated with metal shavings.
   • Inspect the connector for oxidation or burnt contacts.

Resistance check:

Set the multimeter to ohmmeter mode and measure the resistance between the sensor terminals. Norm for Almera Classic — 550–750 Ohm. If the readings are outside these limits, the sensor is faulty.

Induction check:

Switch the multimeter to AC voltage measurement mode (200 mV). Apply a metal object to the sensor core and observe the readings. A working DPKV should produce pulses 0.3–1 V.

If the sensor passes all tests, but the symptoms remain, the problem may lie in:

• 🔌 Wiring (break or short circuit between the sensor and the ECU).
• 🛠️ Ring gear on the crankshaft (broken or worn teeth).
• 🖥️ Electronic control unit (less common, but possible).

Step-by-step instructions for replacing the crankshaft sensor

Replacing DPKV with Almera Classic takes 15–30 minutes and does not require special skills. Follow the algorithm:

1. Preparation:

   Disable negative battery terminal. Remove the engine protection (if equipped). Clear the area around the sensor of dirt to prevent debris from entering the cylinder block.

2. Removing the old sensor:

   Press the latch and disconnect the connector. Unscrew the fastening bolt (the key is on 10 mm). Carefully remove the sensor, rocking it from side to side if it is stuck.

3. Installing a new sensor:

   Clean the seat from oil and dirt. Insert the new DPKV until it stops (it should “sit” with a slight click). Tighten the fastening bolt firmly 8–10 Nm.

4. Connection and testing:

   Connect the connector and return the motor protection to its place. Connect the battery and start the engine. If the error Check Engine remains, reset it using a diagnostic scanner or by disconnecting the battery for 10 minutes.

Important! When installing a new sensor, avoid:

• ❌ Shock loads on the body (may damage the core).
• ❌ Tightening the fastening bolt (risk of breaking the thread in the block).
• ❌ Using sealant on the thread (may get on the core).

What to do if a new sensor does not solve the problem?

If symptoms remain after replacing the DPKV, check:

1. The integrity of the ring gear on the crankshaft (the teeth may be broken).

2. Condition of the wiring from the sensor to the ECU (open or short circuit).

3. ECU settings (may require flashing).

Choosing a crankshaft sensor: original vs analogues

For Nissan Almera Classic Original and aftermarket sensors are available. Main options:

Type	Article	Manufacturer	Average price, ₽	Notes
Original	23731-4M000	Nissan	2 500–3 200	Guaranteed compatibility, high quality
Analogue	DOX-0205	Denso	1 800–2 300	Popular substitute, good reviews
Analogue	555SS20003	Blue Print	1 500–2 000	Budget option, suitable for QG15DE/QG16DE
Analogue	SEN-DPKV003	Sensata	1 900–2 400	High quality, suitable for QG18DE

When choosing an analogue, pay attention to:

• 🔍 Compatible with your engine (check by VIN code).
• 🔍 Housing material (the original is heat-resistant plastic).
• 🔍 Wire length (must match the original).

Warning: cheap sensors without a brand (lower price 1 200 ₽) often have unstable characteristics, which leads to repeated errors P0335.

Common replacement mistakes and how to avoid them

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

1. Using the wrong sensor:

   DPKV for QG15DE And QG18DE They look similar, but have different characteristics. Check the article by the VIN code or markings on the old sensor.

2. Connector damage:

   When disconnecting the connector, do not pull the wires - press the plastic lock. A broken connector will require replacing the entire harness.

3. Incorrect tightening torque:

   The DPKV fastening bolt must be tightened with force 8–10 Nm. Overtightening will lead to thread breakage, and weak tightening will lead to vibrations and false signals.

4. Ignoring ECU errors:

   After replacing the sensor be sure to clear errors through a diagnostic scanner or by disconnecting the battery. Otherwise, the ECU may continue to use incorrect data.

Advice: if after replacing the DPKV the engine runs unstable, check gap between sensor and ring gear. It should be 0.5–1.5 mm. If necessary, adjust the position of the sensor using shims.

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

Is it possible to drive with a faulty DPKV?

No. If the sensor fails completely, the engine will not start. If there is a partial malfunction (for example, a “floating” signal), driving is possible, but is fraught damage to the catalyst, engine overheating And increased fuel consumption.

What tool is needed to replace the DPKV?

Minimum set:

• Key on 10 mm (for fastening bolt).
• Flat blade screwdriver (for connector).
• Multimeter (for checking).
• A rag and contact cleaner (e.g. WD-40).

What happens if the polarity is reversed when connecting a sensor?

DPKV on Almera Classic — inductive type, so the polarity of the connection does not matter. However, when installing, make sure that the connector is pushed in until it clicks, otherwise the contact may break.

How long does the crankshaft sensor last?

Service life of the original DPKV - 100,000–150,000 km. The resource is affected by:

• Fuel quality (bad gasoline accelerates wear).
• Operating conditions (frequent overheating, vibration).
• Wiring integrity (short circuits reduce service life).

Is it possible to clean the crankshaft sensor?

Yes, but only outer part of the case. The core and connector are cleaned using:

• Compressed air (to remove dust).
• Alcohol or contact cleaner (to remove oil).

Prohibited: Do not use abrasives, wire brushes or solvents (such as acetone) as they will damage the plastic and insulation.