Where is the oil pressure sensor located on the Nissan Almera G15: photo, diagram and replacement tips

Oil pressure sensor Nissan Almera G15 - a small but critical element of the engine lubrication system. Its malfunction can lead to serious damage, even motor jamming, and therefore it is important to know where it is located and how to quickly diagnose problems. Owners of this model often encounter false alarms of the oil pressure lamp on the dashboard, which is not always associated with a real drop in pressure - the sensor may be to blame.

In this article you will find exact location of the sensor on engines HR15DE And HR16DE, which were installed on Almera G15 (2012–2018), as well as step-by-step instructions for checking and replacing it. We will analyze typical symptoms of a malfunction, tell you what tools you will need for the job, and give tips on how to avoid mistakes during dismantling. If you notice a flashing oil indicator or strange noises coming from under the hood, this information will help save time and money on diagnostics at a service center.

Where is the oil pressure sensor located on the Nissan Almera G15: photo and diagram

On Nissan Almera G15 The oil pressure sensor is located on rear of the cylinder block, next to the oil filter and gearbox. The exact location depends on the engine type:

• 🔧 HR15DE (1.5 l): the sensor is screwed into the block to the right (in the direction of travel) of the oil filter, just above the oil pan. Access to it is difficult due to the close location of the exhaust manifold.
• 🔧 HR16DE (1.6 l): similar location, but due to the larger engine size the sensor may be moved 1–2 cm closer to the gearbox.

The photo below shows the installation location (the sensor is circled in red, the oil filter is circled in blue for reference):

Photo of the sensor location (clickable)

The image shows that the oil pressure sensor (the marking usually begins with "PS-...") is attached to the block through a threaded connection. There is a wiring harness nearby, which is often confused with the oil temperature sensor (it is located higher, closer to the cylinder head).

To accurately identify the sensor, pay attention to its appearance:

• 📌 The body is metal, cylindrical, with a turnkey hexagon (usually on 22 mm or 24 mm).
• 📌 One wire with a connector comes from the sensor (unlike the temperature sensor, which has 2 contacts).
• 📌 Markings on the case: designations are often found PS-11, PS-19 or similar (depending on the manufacturer).

⚠️ Attention: Do not confuse the oil pressure sensor with oil level sensor (if installed). The latter is located in the oil pan and has a plastic housing with a float.

Signs of a malfunctioning oil pressure sensor

Problems with the sensor manifest themselves in different ways, but the most common symptoms are:

Sign	Possible reason	Actions
Oil pressure light flashes at idle speed	The sensor gives false signals due to membrane wear or contact oxidation	Check the pressure with a pressure gauge, replace the sensor
The light is constantly on, but the oil level is normal	Open circuit of the sensor or its complete failure	Check the wiring, replace the sensor
Engine stalls after warming up	The sensor transmits incorrect data to the ECU, which causes the engine to stop	Diagnostics with a scanner, sensor replacement
Extraneous sounds (knock, hum) from under the hood	Real drop in oil pressure due to pump failure or clogged filter	Stop immediately and check the lubrication system

It is important to distinguish false positives sensor from real pressure problems. For example, if the light only comes on at high speeds, this may indicate worn oil pump or clogged oil receiver screen - in this case, replacing the sensor will not help.

How to check the oil pressure sensor on Almera G15 without removing it

Before dismantling the sensor, you can perform preliminary diagnostics:

1. Checking contacts: Disconnect the connector from the sensor and inspect it for oxidation or damage. Often the problem lies in poor contact.
2. Chain continuity: Use the multimeter in resistance test mode. Connect the probes to the sensor contacts - the resistance should be within 50–100 Ohm (check the manual for exact values).
3. Mass test: Connect one multimeter probe to the sensor body, the second to its contact. The device should show 0 ohm (short to ground).

If preliminary tests do not reveal problems, but symptoms persist, you will have to measure actual oil pressure. To do this:

- Oil pressure gauge (with adapter for sensor thread)

- 22 or 24 mm wrench (depending on sensor)

- Rags and gloves

- Jack or inspection hole-->

Verification algorithm:

1. Warm up the engine to operating temperature (80–90°C).
2. Stop the engine and disconnect the sensor connector.
3. Unscrew the sensor with a wrench and install a pressure gauge in its place.
4. Start the engine and measure the pressure:
   • 📊 At idle speed: 0.8–1.2 bar.
   • 📊 On 3000 rpm: 2.5–3.5 bar.

⚠️ Attention: If the pressure is below normal, turn off the engine immediately - further work may damage the bearings and crankshaft. In this case, check the oil pump, filter and oil condition.

Step-by-step instructions for replacing the oil pressure sensor

Replacing the sensor with Nissan Almera G15 does not require special skills, but will require accuracy due to the cramped engine compartment. Prepare:

• 🔧 Key on 22 mm or 24 mm (depending on the sensor model).
• 🔧 New sensor (original article number: 25580-4M200 or analogues PS-19, PS-11).
• 🔧 O-ring (included with the sensor).
• 🔧 A rag and contact cleaner (e.g. WD-40).

Procedure:

1. Disconnect the negative terminal of the battery to avoid short circuit.
2. Remove the protective plastic engine cover (if installed).
3. Disconnect the connector from the sensor by pressing the latch.
4. Use a wrench to unscrew the sensor counterclockwise. Be careful - some oil may leak out of the hole.
5. Clean the seat from dirt and old sealant.
6. Install new sensor with O-ring and tighten firmly 15–20 Nm (do not overtighten!).
7. Connect the connector and check the system operation.

Common replacement mistakes and how to avoid them

Even experienced car owners make mistakes that lead to repeated breakdowns or oil leaks. Let's look at the most common ones:

• 🔨 Sensor wrap: Excessive tightening force may damage the threads in the aluminum cylinder block. Use a torque wrench or finger tighten with controlled torque.
• 🔨 Ignoring the O-ring: The old ring may appear intact, but it will not provide a seal when reinstalled. Always use new.
• 🔨 Confusion with sensors: On Almera G15 Oil pressure and temperature sensors are located nearby. The first has one contact, the second has two. Mixing them up will result in false readings on your dashboard.
• 🔨 Untested pressure: If replacing the sensor does not solve the problem (the lamp continues to light), be sure to measure the actual pressure with a pressure gauge - the oil pump may be to blame.

Another common mistake is use of non-original sensors. Cheap analogues often have inaccurate characteristics, which is why the pressure lamp may fire late or, conversely, falsely. Recommended manufacturers: Nissan (original), Bosch, Hella, Febi.

Cost of work and spare parts: where to buy and how much replacement costs

Oil pressure sensor price for Nissan Almera G15 varies depending on the manufacturer and place of purchase:

Manufacturer	Article	Price, rub.	Where to buy
Nissan (original)	25580-4M200	1 800–2 500	Official dealers, Exist.ru
Bosch	0 261 231 046	1 200–1 600	Autodoc, AutoSpetsCenter
Hella	6PU 008 607-001	1 000–1 400	Emex, AutoProfi
Febi	25580	800–1 200	Auto49, spare parts markets

Service replacement cost:

• 💰 At the official dealership: 1,500–2,500 rub.
• 💰 In an independent service: 800–1,500 rub.
• 💰 On your own: only the price of the sensor + tools (if you don’t have them, you will need a key for 300–500 rub.).

When purchasing a sensor, pay attention to:

• 📦 Packaging: Original spare parts Nissan supplied in branded boxes with a hologram.
• 📦 Marking: The case must contain the article number and manufacturer's logo.
• 📦 Equipment: The kit must include an O-ring.

Preventing problems with the oil pressure sensor

To make the sensor last longer, follow these simple recommendations:

• 🛢️ Change the oil in a timely manner: Use only those recommended for Almera G15 oils with viscosity 5W-30 or 5W-40 (For example, Nissan Strong Save X E 5W-30). Replacement interval - every 10,000 km or once a year.
• 🛢️ Check the oil level: Check with a dipstick at least once every 1,000 km. Leaks or excess oil consumption lead to a drop in pressure and overheating of the sensor.
• 🛢️ Avoid overheating the engine: Long-term operation at high speeds or in traffic jams increases the load on the lubrication system. Monitor the temperature on the dashboard.
• 🛢️ Clean contacts: Once a year, remove the connector from the sensor and clean the contacts from oxidation (you can use contact lubricant).

If you often drive off-road or in dusty conditions, install additional protection for the oil pan. This will protect the sensor from mechanical damage and dirt.

FAQ: Frequently asked questions about the oil pressure sensor on the Nissan Almera G15

Is it possible to drive if the oil pressure light is on, but the level is normal?

No! Even if the oil level is normal, a lit lamp indicates pressure drop or sensor malfunction. Driving for a long time in this mode will lead to oil starvation and engine damage. Immediately stop the engine and check the pressure with a pressure gauge.

Which oil pressure sensor is suitable for Almera G15 instead of the original one?

Proven analogues:

• Bosch 0 261 231 046 - best price/quality ratio.
• Hella 6PU 008 607-001 — high build quality, suitable for harsh operating conditions.
• Febi 25580 - a budget option, but there are defective copies.

Before purchasing, check the article number with the catalog or consult the seller.

What should I do if the lamp continues to light after replacing the sensor?

Possible reasons:

1. The wiring from the sensor to the ECU is faulty (test the circuit with a multimeter).
2. Problems with the oil pump or the oil receiver screen is clogged.
3. Poor quality sensor (check its resistance).
4. ECU malfunction (requires diagnostics with a scanner).

Start by checking the actual oil pressure with a pressure gauge.

What tool is needed to replace the sensor?

Minimum set:

• Key on 22 mm or 24 mm (depending on the sensor).
• Socket wrench with extension (for convenience if the sensor is in a hard-to-reach place).
• Torque wrench (optional for precise tightening).
• Rags and cleaning agent (WD-40 or analogues).

If the sensor is stuck, you may need penetrating lubricant and a hammer with a wooden spacer.

Is it possible to clean the old sensor instead of replacing it?

Theoretically yes, but this is a temporary solution. Oil pressure sensor - non-removable the device, and its cleaning comes down to:

• Cleaning contacts from oxidation.
• Blowing with compressed air (if dirt gets inside).

However, if the sensor membrane is worn or damaged, cleaning will not help - replacement is required.