The crankshaft position sensor (CPS) is one of the key elements of the engine management system Nissan Sunny FB15. Its malfunction can lead to complete motor failure or unstable operation in all modes. Owners of this model often encounter sensor problems after 150-200 thousand kilometers, when the factory part begins to malfunction due to wear or external factors.

Feature FB15 lies in the location of the sensor - it is installed next to the flywheel, which makes it vulnerable to contamination by metal shavings and oil deposits. Unlike more modern engines Nissan, an induction type sensor is used here, which requires precise adjustment of the gap when replacing. Installation errors can cause false signals to the ECU and lead to costly repairs.

Symptoms of a faulty crankshaft sensor Nissan Sunny FB15

The first symptoms of a problem with DPKV are often confused with malfunctions of the ignition or fuel supply system. However, there are specific signs that directly point to the sensor:

  • 🔴 The engine stalls at idle or with a sharp release of gas - the ECU loses the signal about the crankshaft position and stops supplying fuel.
  • 🚗 Jerks during acceleration, especially at speeds of 60-90 km/h - the sensor produces an intermittent signal, which leads to misfires.
  • ⚡ Check Engine light comes on with code P0335 (DCCV circuit malfunction) or P0336 (signal out of acceptable limits).
  • 🔧 The engine does not start at all - the most critical case when the ECU completely blocks the operation of the system.

It is important to distinguish DPKV problems from camshaft sensor malfunctions (P0340). On FB15 When the camshaft sensor fails, the engine usually starts, but runs in emergency mode. If the DPKV malfunctions, starting is most often impossible.

⚠️ Attention: If, after replacing the timing belt, symptoms of a malfunction of the DPKV appear, check the alignment of the marks on the flywheel. Incorrect belt installation can dislodge the ring gear and cause false sensor errors.

How to check the crankshaft sensor for Nissan Sunny FB15 without scanner

Diagnostics can be carried out in a garage using a multimeter and a minimal set of tools. Main stages of verification:

  1. Visual inspection: Remove the sensor (key 10) and check for metal shavings at the end. Contamination greater than 0.5 mm requires cleaning or replacement.
  2. Resistance test: Connect a multimeter to the sensor terminals. Normal resistance for FB15 — 550-750 Ohm.
  3. Inductance test: Use a megger to test the insulation. Readings below 20 MOhm indicate a breakdown.

An oscilloscope is required for dynamic testing. Connect it to the signal wire of the sensor (pin 2 on the connector) and crank the starter. A healthy sensor should produce a smooth sinusoidal signal with an amplitude of at least 0.5 V.

📊 How do you usually diagnose sensor faults?
  • Do it yourself with a multimeter
  • At a service station with a diagnostic scanner
  • According to symptoms without tools
  • I trust only the official dealer
Verification method Required Tools Symptoms of a problem
Visual inspection Key 10, flashlight Chips, cracks on the body
Resistance check Multimeter Deviation from 550-750 Ohm
Inductance test Megger Insulation breakdown (<20 MOhm)
Oscilloscope Oscilloscope, wires Uneven signal, amplitude <0.3 V

Original articles and analogues of the crankshaft sensor for FB15

For Nissan Sunny FB15 (1998-2006) original crankshaft sensor has an article number 23731-4M000 or 23731-4M005 (depending on the year of manufacture). The cost of the original in official catalogs starts from 4,500 rubles. However, there are several proven analogues:

  • 🔹 DENSO 550-0103 — Japanese quality, price ~3200 rub.
  • 🔹 BOSCH 0 261 210 115 — German reliability, ~3800 rub.
  • 🔹 NGK NTK C1017 — the optimal budget option (~2100 rubles).
  • 🔹 FACET 7.3019 - Italian equivalent for extreme conditions.

Critically important: when purchasing an analogue, check compatibility using the vehicle’s VIN code. Sensors for FB15 1998-2000 and 2001-2006 They have different wire lengths and connectors.

⚠️ Attention: Purchasing sensors from unknown brands (for example, "NoName" from China) is fraught with rapid failure. In 70% of cases, such parts last less than 20 thousand km due to a low-quality magnetic core.

Step-by-step instructions for replacing the crankshaft sensor with Nissan Sunny FB15

Replacing DPKV with FB15 takes about 40 minutes if you have the tools. The main thing is to maintain the gap between the sensor and the flywheel (0.5-1.5 mm).

Phillips Bit Screwdriver|10mm Wrench|Torque Wrench|0.5mm Gap Feeler|Contact Cleaner (CRC)|New O-Ring Gauge-->

  1. Preparation: Disconnect the negative terminal of the battery. Remove the air filter to access the sensor (3 x 10 bolts).
  2. Dismantling: Disconnect the sensor connector by pressing the latch. Unscrew the fastening bolt (the tightening torque for reinstallation is 8-12 Nm).
  3. Installation: Clean the seat from any dirt. Install a new sensor with O-ring. The gap is adjusted with washers (included with the original).
  4. Check: Connect the battery and start the engine. If the error P0335 remains - check the wiring chain from the sensor to the ECU.
What should I do if after replacing the sensor the error does not disappear?

1. Check the integrity of the wiring from the sensor to the computer (often frays near the exhaust manifold).

2. Clean the connector contacts with a special spray (for example, CRC Contact Cleaner).

3. Reset errors using a diagnostic scanner (a simple reset with the battery terminal does not always help).

4. Check the condition of the flywheel ring gear - chips or wear can cause false signals.

On models Sunny FB15 With automatic transmission, access to the sensor is difficult due to the close location of the box. In this case, it is recommended to remove the starter for ease of operation.

Typical mistakes when replacing DPKV and how to avoid them

Even experienced craftsmen make mistakes when working with the crankshaft sensor on FB15. Here are the most common mistakes:

  • 🛑 Incorrect clearance: Installation without a feeler gauge results in a gap of >2mm, causing a weak signal. Use plastic probe 0.5 mm from the sensor kit.
  • 🛑 Damage to the O-ring: Distortions during installation cause air leaks and oil to enter the sensor. Always lubricate the ring with engine oil before installation.
  • 🛑 Ignoring timing marks: After replacing the sensor, be sure to check the alignment of the marks on the flywheel and camshaft.

Another common problem is using sealant instead of an O-ring. On FB15 this leads to sealant getting into the sensor and its immediate failure.

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Before installing a new sensor, apply a thin layer dielectric grease to the connector contacts. This will prevent oxidation and improve signal transmission in high humidity conditions.

Cost of replacing the crankshaft sensor at a service station or independently

Prices for replacing DPKV vary depending on the region and type of service. At official dealerships Nissan the work will cost 3500-5000 rub. (excluding the cost of the sensor). Unofficial service stations charge 1800-2500 rub..

Service type Cost of work (rub.) Sensor cost (RUB) Total (RUB)
Official dealer 4500 4500 (original) 9000
Unofficial service station 2200 3200 (DENSO) 5400
On your own 0 2100 (NGK) 2100

If you replace it yourself, you save up to 70%. However, if you have no experience with FB15, it is recommended to contact specialists - installation errors can lead to damage to the flywheel (repair from 15,000 rub.).

💡

The most common cause of repeated DPKV malfunction is failure to check the flywheel ring gear. If more than 30% of the teeth are worn, the sensor will generate errors even after replacement.

Prevention and extension of sensor service life

Average lifespan of the original sensor Sunny FB15 — 180-220 thousand km. To extend its life, follow these recommendations:

  • 🔧 Change the oil every 7-8 thousand km — metal shavings in old oil accelerates wear of the sensor.
  • 🔧 Avoid washing the engine under high pressure - water gets into the connector and causes corrosion.
  • 🔧 Clean the sensor contacts regularly with spray CRC (every 30 thousand km).
  • 🔧 Check the engine grounding circuit - poor ground contact distorts the DPKV signal.

On cars with gas equipment, the crankshaft sensor fails 30% more often due to increased vibrations. In this case, it is recommended to install sensors with a reinforced housing (for example, BOSCH 0 261 210 115).

What happens if you drive with a faulty crankshaft sensor?

Long-term operation with a non-working DPKV leads to:

  • Damage to ignition coils due to misfires.
  • Overheating of the catalyst (risk of honeycomb melting).
  • Increased wear of the piston group due to detonation.
  • ECU failure (in 10% of cases during prolonged operation with an error P0335).

Critical case - timing belt break due to asynchronous operation of the camshaft and crankshaft (repair ~50,000 rub.).

Can the crankshaft sensor be repaired or is it just a replacement?

DPKV on FB15 - non-separable unit. All “repairs” (rewinding the coil, replacing the core) give a temporary effect (1-3 months). The only exception is cleaning from metal shavings if the sensor itself is working properly.

The cost of “repairs” in handicraft workshops (~1500 rubles) is unjustified - a new sensor NGK costs only 600 rubles. more expensive.

Which sensor is better to choose: original or analogue?

For Nissan Sunny FB15 optimal options:

  • Original (23731-4M005) — the best choice for turbocharged versions (if there were any).
  • DENSO 550-0103 — the best analogue in terms of price/quality ratio.
  • BOSCH 0 261 210 115 — for extreme conditions (severe frosts, high humidity).

Avoid Brand Sensors Febi, Meat & Doria - they have a high percentage of defects (according to service station statistics - 1 out of 5 parts).

Do I need to reset the ECU adaptations after replacing the sensor?

On FB15 no adaptation reset is required - the ECU automatically recalibrates after 3-5 startup cycles. However, if the engine is unstable, follow the procedure:

  1. Reset the battery terminal for 10 minutes.
  2. Start the engine and let it idle for 5 minutes.
  3. Drive 10-15 km with smooth acceleration up to 4000 rpm.

If the error P0335 remains - the problem is in the wiring or the ECU.

Where is the crankshaft sensor located on a Nissan Sunny FB15 with a diesel engine?

Nissan Sunny FB15 produced only with gasoline engines GA15DE (1.5 l). Diesel versions (CD17, CD20) were installed on the model Nissan Primera And Almera, where the sensor is located on the cylinder block on the gearbox side.

If your car is equipped with a diesel engine, check the engine model using the VIN code - the sensor layouts are different.