Owners Nissan Almera (especially models G15 And N16) often encounter an error P0340 — "Camshaft position sensor circuit malfunction." This problem can manifest itself in different ways: from unstable engine operation to complete refusal to start. Unlike more obvious faults such as misfire or problems with the fuel system, the P0340 code often confuses drivers due to its “electronic” nature.

In this article we will look at what exactly is hidden behind the code. P0340why does he appear on Almera (including versions with engines HR16DE And K4M), and what to do to resolve the problem. It is important to understand: ignoring this error may lead to damage to the catalytic converter due to improper operation of the injection system, and this is already a serious repair. Therefore, let's sort it out in order - from theory to practice.

What does error P0340 mean on Nissan Almera

Code P0340 stands for "Camshaft Position Sensor 'A' Circuit Malfunction" (camshaft position sensor circuit malfunction). This sensor (often called DPRV) is responsible for synchronizing work injection systems And ignition with the camshaft position. If the ECU (electronic control unit) does not receive the correct signal from the DPRV, the engine begins to run “blindly,” which leads to:

  • 🔥 Increased fuel consumption (up to +20% per Almera G15)
  • 🚗 Jerks and failures during acceleration
  • ⚡ Lighting up the lamp Check Engine (sometimes flashing)
  • 🔧 Difficulty starting the engine (especially when cold)

On Nissan Almera with engines HR16DE (1.6 l) and K4M (1.6 L, Renault) camshaft sensor is usually located on the cylinder head from the timing belt side. Its malfunction may be related to the sensor itself, or to the wiring or connector. And on Almera N16 (2000–2006) the problem occurs more often due to contact oxidation, and on G15 (2012–present) - due to wear of the sensor itself.

⚠️ Attention: On some Almera with engine K4M Trouble code P0340 may be accompanied by a code P0335 (crankshaft sensor malfunction). In this case, diagnosis should begin with checking timing belt — a shift in valve timing is possible.

Causes of error P0340

Experts identify several key reasons why Nissan Almera an error occurs P0340. They can be roughly divided into mechanical, electric And software. Let's look at each category in more detail.

Fault type Specific reason Frequency on Almera
Mechanical Worn or damaged camshaft sensor High (especially after 100,000 km)
Electric Oxidation of contacts of the DPRV connector Medium (usually on N16)
Electric Broken or shorted wiring Low (usually after an accident or body repair)
Software ECU firmware failure Rarely (after incorrect chip tuning)
Mechanical Timing timing mark offset High (if the belt is replaced incorrectly)

In practice more than 60% of cases errors P0340 on Almera associated with malfunction of the sensor itself or its connector. However, other reasons should not be discounted. For example, if the timing belt has recently been replaced, there is a high probability that the marks were installed incorrectly. The error may also appear after engine washif water gets into the DPRV connector.

One more nuance: on Almera G15 with the system VVT-i (variable valve timing) code P0340 is sometimes accompanied by an error code P0011 (“Camshaft phase shift”). This indicates a problem with VVT coupling or its solenoid, and not with the sensor.

📊 How often do you check errors on your Nissan Almera?
  • Only when the Check Engine light comes on
  • Once every 1–2 months
  • Before every trip
  • I never check

Symptoms of error P0340: how it manifests itself on Nissan Almera

Error P0340 rarely appears “on its own” - it is usually preceded by noticeable changes in the behavior of the car. On Nissan Almera the most common symptoms include:

  • 🔴 Difficulty starting the engine (especially after a long stay)
  • 📉 Power drop when overtaking or climbing
  • 🔄 Floating speed at idle speed (800–1200 rpm)
  • 💥 Popping sounds in the exhaust system (due to incorrect injection)
  • 🚨 Activating emergency mode (rev limit to 3000)

It's interesting that on Almera N16 with engine QG15DE P0340 appears frequently only on a hot engine, whereas on G15 with HR16DE — mainly “in the cold”. This is due to the different location of the sensor and its sensitivity to temperature.

If you notice several symptoms at the same time, there is a high probability that the problem is in the DPRV or its circuit. However, for an accurate diagnosis it will be necessary OBD-II scanner (For example, Launch CReader or ELM327). With its help you can not only read the P0340 code, but also view real-time sensor parameters (for example, the signal from the DPRV must be 0–5 V depending on the position of the shaft).

⚠️ Attention: On some Almera error P0340 may disappear after a reset (for example, by disconnecting the battery), but return after 50–100 km. This is a typical sign periodic open circuit — Check the sensor connector for corrosion.

Diagnosing error P0340: step-by-step instructions

To pinpoint the cause of the error P0340 on your Nissan Almera, follow this algorithm. Let's start with the simplest checks and gradually move on to more complex ones.

Visual inspection of the sensor and wiring|Checking the connector for oxidation|Testing the sensor resistance with a multimeter|Checking the signal with an oscilloscope|Diagnostics of the ECU for additional errors-->

Step 1. Visual inspection

Open the hood and locate the camshaft sensor. On Almera G15 it is located on the right side of the block head (if you are facing the engine), on N16 — closer to the front of the engine. Please note:

  • 🔌 Connector status (is there any green oxide or moisture)
  • 🔗 Wire integrity (fraying, fractures)
  • 🧲 Cleanliness of the sensor housing (metal shavings may block the signal)

Step 2: Check the sensor resistance

Disconnect the DPRV connector and measure the resistance between its contacts using a multimeter. For Almera normal values:

  • HR16DE: 800–1400 Ohm
  • K4M: 200–1000 Ohm

If resistance tends to zero (short circuit) or infinity (break), the sensor must be replaced.

Step 3. Checking the signal with an oscilloscope

This is the most accurate method, but requires special equipment. Connect the oscilloscope to the DPRV signal wire (usually middle contact in the connector) and start the engine. On a working sensor you will see square wave with clear fronts. If the signal:

  • 📉 Noisy → problem with wiring or ground
  • 🔄 Missing → sensor faulty or open circuit
  • ⚡ Has incorrect amplitude → timing marks may shift
How to check DPRV without an oscilloscope?

If you don't have an oscilloscope, you can use a simple test with a multimeter in voltage measurement mode. Connect the probes to the signal wire and the ground of the sensor, then turn the starter (without starting the engine). On a working DPRV, the voltage should vary in the range 0.3–4.7 V. No change indicates a malfunction.

How to fix error code P0340: from simple to complex

Depending on the cause, ways to resolve the error P0340 on Nissan Almera can range from basic contact cleaning to sensor replacement or even timing belt repair. Let's consider all the options.

1. Cleaning the contacts and connector

If the problem is oxidation, it is enough:

  • 🧴 Process contacts electrical wiring cleaner (For example, CRC Electronic Cleaner)
  • 🔧 Clean the oxides with fine sandpaper (P1000)
  • 🔌 Apply to the connector dielectric grease (For example, Liqui Moly Electronic-Spray)

This method helps in 30–40% of cases, especially on Almera N16.

2. Replacing the camshaft sensor

If the sensor is faulty, it must be replaced. For Nissan Almera The following items are suitable:

Engine Original article Analogs (brand)
HR16DE (G15) 23731-4M515 Bosch 0 261 210 115, ERA 550423
K4M (G15) 8200773607 (Renault) Valeo 587035, Febi 37720
QG15DE (N16) 23731-6M500 Denso 5503-0106, Blue Print ADS305011

When replacing the sensor:

  1. Disable negative battery terminal (to avoid ECU errors).
  2. Disconnect the connector and unscrew the sensor with a key 10 mm.
  3. Install the new sensor after lubricating the threads sealant (For example, Loctite 577).
  4. Connect the connector and check for errors with a scanner.
⚠️ Attention: On Almera G15 after replacing the DPRV may be required reset ECU adaptations through diagnostic equipment (for example, Nissan Consult). Without this, error P0340 may remain in the unit's memory.

3. Check and replace wiring

If the sensor is working, but the error remains, the problem may lie in the wiring. On Almera most often suffer:

  • 🔥 Wire from DPRV to ECU (passes next to the manifold outlet and may melt)
  • 🔌 Connector on wiring harness (in the area of the left headlight)

To check:

  1. Disconnect the ECU connector (usually under the dashboard on the passenger side).
  2. Check the circuit from the DPRV to the ECU for an open or short circuit.
  3. If necessary, repair the wiring or replace the harness.

4. Checking timing marks

If the P0340 error appears after replacing the timing belt, there is a high probability that the timing marks were not installed correctly. On Almera this can be checked:

  • 🔧 Taking off timing cover and visually aligning the marks on the pulleys.
  • 📊 Using a diagnostic scanner (parameter "Ignition timing"must be within ±5°).

If the marks are knocked down, you will need reinstalling the timing belt with re-checking.

💡

On Almera G15 When replacing the timing belt, be sure to fix the camshafts with a special device (article no. KV10115800). Without fixation, the marks may get lost even with careful work.

How much does a repair cost: prices for spare parts and labor

Cost of fixing the error P0340 on Nissan Almera depends on the cause and region. Below is the approximate price list for spare parts and labor (as of 2026).

Service/Spare part Price (RUB) Notes
Camshaft sensor (original) 2 500 – 4 000 For HR16DE And K4M
Camshaft sensor (analog) 800 – 1 500 Brands: Bosch, ERA, Valeo
Diagnostics (read errors) 500 – 1 500 Depending on the service station
Replacing the camshaft sensor 800 – 2 000 Does not include the cost of spare parts
Wiring repair (partial) 1 500 – 3 000 Includes soldering and insulation
Replacing the timing belt with markings 5 000 – 8 000 Includes rollers and tensioner

If you decide to do the repairs yourself, the total cost will be from 800 to 2,500 rubles (sensor cost + contact cleaner). In the service, complete diagnostics and replacement will cost 3,000–6,000 rubles, and if intervention in the timing belt is required - until 10,000 rubles.

Is it worth going to the service? Definitely yes, if:

  • 🔧 You have no experience with oscilloscope or multimeter.
  • 📊 Error P0340 is accompanied by other codes (for example, P0011 or P0335).
  • 🔄 The problem returns after resetting or replacing the sensor.
💡

On Almera G15 with mileage over 150,000 km, error P0340 often indicates wear and tear camshafts or bearings. In this case, replacing the sensor will give a temporary effect, and a full repair will require opening the cylinder head.

Prevention: How to Avoid P0340 in the Future

To minimize the risk of the error reoccurring P0340 on your Nissan Almera, follow these guidelines:

  • 🛢️ Use quality motor oil (For example, Nissan Strong Save X 5W-30 or Mobil 1 ESP 5W-30). Bad oil accelerates wear on camshafts and sensors.
  • 🔧 Change the timing belt strictly according to the regulations (every 60,000 km or 4 years for Almera G15).
  • 🚿 Avoid high-pressure engine washing — water can get into the DPRV connector.
  • 🔌 Clean your contacts periodically electrical wiring (every 2–3 years).
  • 📊 Carry out diagnostics at the first sign of unstable engine operation.

Pay special attention quality of spare parts. There are many fake camshaft sensors on the market for Almera, which fail after 10–20 thousand km. Buy parts only from official dealers or trusted suppliers (for example, Exist.ru, Autodoc).

Also useful keep a logbook car, where to fix:

  • 📅 Oil and filter change dates.
  • 🔧 All repair work related to timing belt and electronics.
  • ⚡ Errors appear (even if they disappeared after the reset).

This will help identify systemic problems at an early stage.

FAQ: Frequently asked questions about error P0340 on Nissan Almera

Is it possible to drive with P0340?

Short term - yes, but not recommended. Long-term driving with a faulty air pressure control valve leads to:

  • 🔥 Increased wear catalyst (due to incorrect fuel mixture).
  • 💥 Increased load on spark plugs And coils.
  • 📉 Decrease in power and increased fuel consumption.

If the error appears on the way, get to your home or service center, but do not delay repairs for long.

Why does P0340 only appear when the engine is cold?

This is typical for Almera G15 with engine HR16DE. The reason is sensor temperature degradation: When heated, its resistance changes and the signal is restored. However, over time, the problem will progress and the error will begin to appear constantly. Solution - sensor replacement.

Could P0340 be caused by bad gasoline?

No, directly fuel has no effect to work DPRV. However, low-quality gasoline can cause:

  • 🔥 Detonation, which indirectly affects the sensors.
  • 🧯 Pollution injectors, which leads to unstable engine operation and false errors.

If problems arise after refueling at an unfamiliar gas station, try drain gasoline and fill in a quality one (for example, Gazpromneft G-Drive 95).

What should I do if the P0340 error remains after replacing the sensor?

In this case, check:

  1. Correct connector connection (sometimes the contacts are mixed up).
  2. Wiring integrity from the sensor to the ECU.
  3. Timing marks (if the belt has been changed recently).
  4. ECU firmware - adaptations may need to be reset.

If everything is fine, but the error remains, the problem may be the ECU itself (for example, board oxidation or memory failure). In this case, only diagnostics at a service center with an experienced electronics engineer will help.

How many camshaft sensors are there on Nissan Almera G15?

On Almera G15 with engines HR16DE And K4M installed one camshaft sensor (for intake shaft). On some modifications with the system VVT-i There may be an additional sensor for the exhaust shaft, but it is not associated with the P0340 code.