Error P0340 on Nissan Almera (especially relevant for models N16, G15 And Tino with engines QR20DE, QR25DE) is one of the most common problems associated with the engine management system. It indicates a malfunction camshaft position sensor (CPR), which can lead to engine malfunctions, increased fuel consumption and even the inability to start the car. In this article we will look at why P0340 specifically on Almeras with a distributed injection system Nissan ECCS, how to correctly diagnose it and what steps to take for repair - from simple cleaning of contacts to replacing the sensor or timing chain.

It is important to understand that ignoring this error is fraught with serious consequences: from loss of power to damage to the catalytic converter. Moreover, in 30% of cases the problem lies not in the sensor itself, but in the wiring, connectors or mechanical faults of the timing drive. We have collected current data on Almera Classic (including Russian assembly), and also took into account the nuances of diagnostics using scanners ELM327 and professional equipment Consult-III Plus.

What does the P0340 code mean? Nissan Almera?

Code P0340 stands for "Camshaft Position Sensor Circuit Malfunction" (Camshaft Position Sensor Circuit Malfunction). This sensor (aka CMP) is responsible for synchronizing the operation of the ignition and fuel injection systems, sending signals to ECU about the current position of the camshaft. On Almera with engines QR series the sensor is usually located:

  • 🔧 On Nissan Almera N16 (2000–2006) - on the back of the cylinder head, next to the oil filter.
  • 🔧 On Almera Classic G15 (2006–2012) - at the end of the cylinder head on the intake manifold side.
  • 🔧 On Almera Tino - under the plastic valve cover, next to the thermostat.

When ECU stops receiving the correct signal from the DPRV, it goes into emergency mode, using data only from crankshaft sensor (CPCV). This leads to:

  • ⚡ Floating speed at idle (especially after warming up).
  • 🛢️ Increased fuel consumption (up to +15–20%).
  • 🚗 Jerks during acceleration and loss of dynamics.
  • 🔥 Lighting up the lamp Check Engine (sometimes flashing).

On Almera with CVT variator error P0340 may additionally cause jerking when shifting gears due to incorrect signals to the transmission control unit.

📊 How long have you had the P0340 code?
  • Less than a week
  • 1–3 weeks
  • More than a month
  • Constantly appears and disappears

Causes of error P0340

Unlike generic articles, we will focus on specific to Nissan Almera reasons confirmed by diagnosticians and owners. Here are the key factors:

  1. Malfunction of the DPRV sensor itself (wear, contamination, internal breakage). On Almera N16 the original sensor has an article number 23731-4M000 or 23731-4M005 (depending on the year).
  2. Problems with wiring or connector: oxidation of contacts, chafing of insulation (especially important for wires running near the exhaust manifold).
  3. Mechanical timing faults:
    • 🔗 Timing chain stretch (critical for engines QR25DE after 150 thousand km).
    • 🔗 Worn sprockets or chain tensioner.
    • 🔗 Shift in valve timing (for example, after incorrect belt replacement).
  • Computer malfunctions (rare, but found on Almera Classic with firmware up to 2010).
  • The master disk is dirty or damaged (reference wheel) on the camshaft.

    • In practice 60% of cases errors P0340 on Almera are related to the sensor or wiring, and the remaining 40% are related to the timing mechanics. For example, a stretched chain may result in an unstable RTD signal due to changes in the gap between the sensor and the reference disk.

    How to check timing chain stretch without disassembling?

    On a cold engine, listen to the idle speed: if the chain “rattles” (a ringing metallic sound), this is a sign of critical wear. You can also remove the valve cover and visually assess the sagging (the norm is no more than 5–7 mm).

    P0340 Symptoms: How to Recognize the Problem

    On Nissan Almera error P0340 manifests itself differently depending on the degree of malfunction. Here are typical signs that will help distinguish it from other codes (for example, P0300 — misfires):

    Symptom Nature of manifestation Additional signs
    Difficulty starting the engine The engine starts within 3–5 attempts, especially when hot. May be accompanied by an error P0335 (DPKV)
    Floating speed The speed fluctuates in the range of 700–1200 rpm More often appears after warming up to 80–90°C
    Power Loss The car is “stupid” when accelerating and does not pull uphill An error may appear P0171 (lean mixture)
    Jerking when moving Jerks at speeds of 60–90 km/h On Almera with CVT - twitching when switching

    Feature Nissan Almera: in case of DPRV malfunction Check Engine may not light up immediately, but after 10–15 minutes of driving, when the ECU has accumulated enough data to record the error. Also on some versions (for example, Almera N16 with Euro-3) the error may be accompanied by P0345 - "Camshaft sensor circuit malfunction, bank 1."

    ⚠️ Attention: If together with P0340 appears P0011 (“Camshaft phasing”), this is almost guaranteed to indicate a problem with the timing chain or tensioner. In this case, urgent diagnosis is required!

    Diagnosing error P0340: step-by-step instructions

    Before changing the sensor, it is necessary to carry out a comprehensive check. Below is a diagnostic algorithm adapted for Nissan Almera:

    1. Reading errors with a scanner

    Use a scanner (eg ELM327 with the program Torque Pro or Nissan DataScan). Important:

    • 📱 Write it down freeze frame data (engine parameters at the time the error occurred).
    • 📱 Check for related codes (P0335, P0011 etc.).
    • 📱 Pay attention to the parameter "Camshaft Position Sensor Bank 1" - if it shows 0 V or 5 V (instead of 0.3–4.7 V), the sensor is faulty.

    2. Checking the DPRV sensor

    To test the sensor you will need a multimeter. Algorithm:

    1. Remove the connector from the sensor (on Almera N16 it is secured with a plastic latch).
    2. Set the multimeter to resistance (Ω) measurement mode.
    3. Connect the probes to the sensor contacts (polarity is not important). Normal resistance: 800–1400 Ohm.
    4. If resistance 0 ohm (short circuit) or ∞ (break), the sensor must be replaced.

    Ring the circuit from the sensor to the ECU (pins 1 and 2 of the ECU connector)|Check the voltage at the sensor connector (there should be 5 V between “+” and “–”)|Inspect the wires for chafing (especially near the exhaust manifold)|Check the ground of the sensor (pin 3 of the connector)

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    3. Checking the timing chain

    If the sensor and wiring are OK, but the error remains, you need to check the mechanical part:

    • 🔗 Remove the valve cover and visually assess the condition of the chain (on QR25DE critical wear - stretching by more than 1 tooth).
    • 🔗 Check the chain tensioner - if it is jammed, the chain will sag.
    • 🔗 Make sure that the timing marks match (on the camshaft and crankshaft pulley).

    On Almera Classic with engine QR20DE a common problem with plastic chain guide, which breaks down over time and blocks the movement of the chain.

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    On Nissan Almera N16 When replacing the timing chain, be sure to also change the tensioner (part number 13070-4M000). Using an old tensioner in 80% of cases leads to re-stretching of the chain after 20–30 thousand km.

    How to Fix P0340: Repair and Replacement

    Depending on the cause, ways to resolve the error P0340 on Nissan Almera vary. Let's consider each case in detail.

    1. Replacing the camshaft position sensor

    If the diagnostics show a faulty sensor, it must be replaced. For Almera fit:

    • 🔧 Original sensor: 23731-4M000 (price ~2500–3500 rub.).
    • 🔧 Analogues: Bosch 0 261 210 115, Denso 5503122 (price ~1500–2000 rub.).

    Replacement process:

    1. Disconnect the negative terminal of the battery.
    2. Disconnect the sensor connector (press the lock).
    3. Unscrew the sensor mounting bolt (usually 10 mm).
    4. Remove the old sensor and install the new one (pay attention to the O-ring!).
    5. Connect the connector and check for errors with a scanner.
    ⚠️ Attention: On Almera G15 When replacing a sensor, the plastic connector retainer often breaks. Buy a spare one in advance (item no. 23731-4M001).

    2. Wiring repair

    If the problem is in the wires, proceed as follows:

    • 🔧 Clean the oxidized contacts in the connector (use WD-40 and a needle).
    • 🔧 Replace damaged wires (the cross-section must be at least 0.5 mm²).
    • 🔧 Secure the wiring harness so that it does not touch the exhaust manifold (use heat-resistant clamps).

    3. Troubleshooting timing chain problems

    If the error P0340 caused by a stretched chain or worn sprockets, you will need:

    • 🔧 Replacement of timing chain (kit for QR20DE: 13028-4M005, price ~5000–7000 rub.).
    • 🔧 Replacement of tensioner and damper (required!).
    • 🔧 Check and, if necessary, replace the camshaft and crankshaft sprockets.

    On Nissan Almera N16 with a mileage of more than 200 thousand km, it is recommended to simultaneously replace both phase regulator (article 13810-4M000), since its wear can also affect the DPRV signal.

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    If after replacing the timing chain there is an error P0340 remains, check that the marks are installed correctly and the condition of the drive disc on the camshaft - it could have shifted or become deformed.

    How much does a service repair cost?

    Cost of fixing the error P0340 on Nissan Almera varies by cause and region. Below are the estimated prices for Moscow and the regions (for 2026):

    Type of work Cost (Moscow) Cost (regions)
    Diagnostics (scanner + sensor check) 1000–1500 rub. 600–1000 rub.
    Replacing the DPRV sensor 1500–2500 rub. (with work) 1000–1800 rub.
    Wiring repair (stripping, soldering) 1500–3000 rub. 1000–2000 rub.
    Timing chain replacement (kit + labor) 12,000–18,000 rub. RUB 8,000–12,000
    Replacing the phase regulator 4000–6000 rub. 3000–4500 rub.

    You can save money by purchasing spare parts yourself (for example, a timing chain Febi or INA will cost 20–30% less than the original). However, please note: Almera with engines QR series It is not recommended to install cheap Chinese analogues of sensors - they often fail after 10–15 thousand km.

    Prevention of error P0340 on Nissan Almera

    To avoid the error reappearing P0340, follow these guidelines:

    • 🔧 Every 60,000 km Check the condition of the timing chain (auditory or visual).
    • 🔧 Once a year, clean the contacts of the DPRV sensor from oxidation (use CRC Contact Cleaner).
    • 🔧 Avoid washing the engine under high pressure - water may get into the sensor connector.
    • 🔧 When changing oil, use the original filter (15208-65F0E) - low-quality filters can lead to oil starvation and accelerated wear of the timing belt.
    • 🔧 If the car has been standing idle for a long time, before starting, check the voltage on the sensor (there should be 5 V).

    On Almera Classic with variator Jatco It is especially important to monitor the condition of the timing chain, since its break can lead to damage to the transmission (the cost of repairing a variator is from 80,000 rubles).

    FAQ: Frequently asked questions about error code P0340

    Is it possible to drive with P0340?

    Short term - yes, but not recommended. The engine will operate in emergency mode, which will lead to increased wear of the catalyst, spark plugs and fuel system. On Almera with an error P0340 fuel consumption may increase by up to 12–15 l/100 km.

    Why does P0340 only appear when the engine is hot?

    This is a typical sign of a malfunction of the DPRV sensor or oxidation of its contacts. When heated, the resistance in the circuit changes and the signal becomes unstable. The cause may also be a stretched timing chain, which begins to “slip” as the metal expands.

    How to reset P0340 after repair?

    Use a scanner (ELM327, Launch etc.) or disconnect the battery terminal for 10–15 minutes. On Almera with Euro 4/5 throttle adaptation may be required after reset (via Nissan DataScan).

    Can bad fuel cause P0340?

    No, directly - no. However, low-quality fuel can lead to detonation, which indirectly affects the operation of the timing belt and sensors. If the error P0340 appeared after refueling, most likely this is a coincidence - look for a problem in the sensor or wiring.

    What other sensors can affect error P0340?

    The operation of the DPRV is indirectly affected by:

    • 🔧 Crankshaft sensor (CPCV) - if it is faulty, the ECU cannot synchronize the signals.
    • 🔧 Coolant temperature sensor — incorrect temperature data distorts fuel maps.
    • 🔧 Absolute Pressure (MAP) Sensor — affects the calculation of engine load.