Error 0345 Nissan: decoding, diagnosis and repair

Error code 0345 on cars Nissan - one of those mysterious malfunctions that can baffle even experienced car owners. Unlike obvious problems like P0300 (misfire), this code is often left without proper attention, although it may indicate serious malfunctions in the engine or transmission. Depending on the model - be it Qashqai J11, X-Trail T32 or Navara D40 — the manifestations of the error may differ, but the essence remains common: the system records a discrepancy between the actual operating parameters of the unit and the reference values recorded in the ECU.

Most often 0345 associated with malfunctions camshaft position (CMP) sensor or its chain, but in practice the range of reasons is wider. In some cases, mechanical wear of timing parts is to blame, in others, software failures after unsuccessful chip tuning. The main difficulty for the owner is to understand where exactly the problem lies without spending money on replacing working components. This article will help you understand the nuances of diagnostics, avoid common mistakes during repairs and save on service centers.

What does error 0345 mean on Nissan?

Code 0345 belongs to the category generic (universal) OBD-II errors, but its interpretation varies by manufacturer. U Nissan it stands for "Camshaft Position Sensor Circuit Malfunction (Bank 1)". Translated into practical language, this means that the engine ECU receives an incorrect signal from the sensor CMP (or does not receive it at all), which interferes with the synchronization of the ignition and fuel injection systems.

Important to understand: error 0345 does not always indicate a failure of the sensor itself. The problem may lie in:

• 🔌 Open or short circuit in the sensor wiring (the insulation near the exhaust manifold often suffers).
• 🛠️ Mechanical shear camshaft relative to the marks (for example, after replacing the timing belt).
• 💻 ECU firmware failure, especially after chip tuning or software update.
• ⚡ Nutrition problems sensor (blown fuse, oxidized contacts).

On some models Nissan (For example, Pathfinder R51 with engine VQ40DE) error 0345 may be accompanied by code 0335 (crankshaft position sensor malfunction). This makes diagnosis difficult because the symptoms of both errors often overlap.

Symptoms of error 0345: how the problem manifests itself

Key feature of the error 0345 — its “floating” character. Symptoms may come and go, making it difficult to find the cause. Here are typical signs to look out for:

• 🚗 Unstable idle: the speed “floats” in the range of 500–1200 rpm, sometimes the engine stalls.
• ⚡ Dips during acceleration, especially at speeds of 2000–3000 rpm (feels like “twitching”).
• 🔥 Check Engine light comes on, sometimes paired with an indicator VDC Off (on models with stability control system).
• 🛢️ Increased fuel consumption (by 10–15%) due to suboptimal injection.
• 🔧 Difficulty starting "hot" - the engine starts only after 2-3 attempts.

On diesel Nissan (For example, Navara with engine YD25DDTi) error 0345 may appear jerky when changing gears in an automatic box. This is because the transmission ECU also uses the signal from the camshaft sensor to adjust shift timing.

⚠️ Attention: If the error 0345 accompanied by metallic knock from under the hood, stop driving immediately! This may indicate timing belt jump or a breakdown of the tensioner, which leads to a collision of pistons with valves.

Model Nissan	Engine	Typical related errors	Common reason 0345
Qashqai J10/J11	MR20DE, HR16DE	P0011, P0340	Camshaft gear wear
X-Trail T31/T32	QR25DE, MR20DD	P0300, P0335	Broken CMP sensor wiring
Navara D40	YD25DDTi, VQ40DE	P0016, P0341	Timing timing mark offset
Pathfinder R51	VQ35DE	P0340, P0344	CMP sensor malfunction

Reasons for error 0345

To effectively resolve an error, you need to understand its root cause. Let's look at the main scenarios, starting with the most likely:

1. Malfunction of the camshaft position (CMP) sensor

Sensor CMP - the most vulnerable element in this chain. Over time, its magnetic core loses sensitivity, and the body cracks due to temperature changes. On Nissan with series engines VQ And MR sensors often fail after 100–120 thousand kilometers.

How to check: Measure the resistance between the sensor contacts with a multimeter. For most models Nissan normal value - 500–1500 Ohm. A deviation indicates a malfunction.

2. Problems with wiring or connector

Sensor wires CMP pass near hot parts of the engine, which leads to insulation melting and short circuits. Especially relevant for Nissan Almera N16 And Primera P12, where the harness is routed next to the exhaust manifold.

Diagnostics: Check the circuit for opens and shorts using a multimeter in “continuity” mode. Pay attention to the connector contacts - they often oxidize.

3. Mechanical timing faults

If the timing belt or chain is stretched or the tensioner is worn, the camshaft may move relative to the crankshaft. This leads to discrepancies in sensor signals CMP And CKP (crankshaft position), which causes the error 0345.

Signs: Extraneous noise from under the timing cover, uneven wear of belt/chain teeth.

How to check timing marks without disassembling?

Remove the oil filler cap and turn the crankshaft clockwise with a wrench until the mark on the pulley aligns with the pointer. Then check the position of the camshaft through the inspection window (if provided by the design).

4. ECU malfunctions

Less common error 0345 occurs due to software glitches of the control unit. This is typical for cars after unsuccessful chip tuning or flashing with wrong software versions. For example, on Nissan Juke with engine HR16DE the error may appear after installing the firmware for Euro-6 on an engine not intended for it.

⚠️ Attention: If the error 0345 appeared after visiting a tuning studio, do not try to reset it with a scanner! This may lead to loss of calibration data ECU and complete engine inoperability.

Diagnosing error 0345: step-by-step instructions

To accurately determine the cause of the error, follow this algorithm. Let's start with the simplest checks and gradually move on to more complex ones:

Read error codes with a scanner (for example, Launch CReader)|Check the integrity of the CMP sensor wiring|Measure the resistance of the sensor with a multimeter|Check the timing marks|Check the sensor supply voltage (12V between + and ground)-->

Step 1: Reading Error Codes

Use a diagnostic scanner (eg Launch CReader or ELM327) for a complete list of errors. Please note the accompanying codes:

• P0340 - general sensor failure CMP.
• P0011 — displacement of valve timing.
• P0335 — problem with the crankshaft sensor (CKP).

If except 0345 there are other errors, start diagnosing them with them.

Step 2: Checking the CMP Sensor

The sensor is located on the cylinder head (usually near the first cylinder). Verification algorithm:

1. Remove the connector from the sensor and check the contacts for oxidation.
2. Measure the resistance between the sensor terminals (standard: 500–1500 Ohm).
3. Reconnect the sensor and check the supply voltage (should be 12V between "+" and ground).

Step 3: Checking timing marks

If the sensor is working, but the error remains, check that the marks match:

1. Remove the upper timing case cover.
2. Turn the crankshaft until the mark on the pulley aligns with the pointer.
3. Make sure the mark on the camshaft matches the mark on the housing.

On Nissan with timing chain drive (for example, X-Trail T32) pay attention to the tensioner - weakening it leads to stretching of the chain and phase displacement.

Step 4: Check Wiring

Use a multimeter in test mode to ensure the integrity of the wires from the sensor to the ECU. Pay special attention to the sections of the harness running next to the exhaust manifold - the insulation often melts there.

How to fix error 0345: repair methods

The repair method depends on the identified cause. Let's consider the options from the simplest to the major:

1. Replacing the camshaft position sensor

If the sensor is faulty, it must be replaced. For most models Nissan Original sensors with article numbers are suitable:

• 23731-AL50A - for engines MR20DE, QR25DE.
• 23731-3M50A - for VQ35DE, VQ40DE.
• 23731-JK00A - for diesel YD25DDTi.

Cost of the original sensor - 2000–4000 rubles. Analogs (for example, Bosch or Denso) will cost 1.5–2 times less, but their reliability is lower.

2. Wiring repair

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

1. Clean the oxidized contacts in the sensor connector.
2. Replace the melted sections of the harness using heat shrink tubing for insulation.
3. Check the sensor circuit fuse (usually F10 or F15 in the block under the hood).

3. Adjustment of timing marks

If the marks are knocked down, you will need:

1. Remove the timing belt/chain.
2. Align the crankshaft and camshaft to the marks (use special clamps for Nissan).
3. Replace the tensioner and rollers (mandatory on engines VQ And MR).

On Nissan Almera N16 And Primera P12 after replacing the timing belt is required throttle learning via diagnostic scanner!

4. Flashing the ECU

If the error appears after chip tuning, return the factory firmware. To do this:

1. Read current firmware via K-TAG or Kess V2.
2. Find the stock firmware for your model (for example, on the forum Nissan Club Russia).
3. Upload it back, after saving the original dump.

⚠️ Attention: Incorrect firmware may block the ECU! If you are not confident in your skills, contact a specialist.

Common repair mistakes and how to avoid them

Many owners Nissan encounter a relapse of the error 0345 after a seemingly successful renovation. Here are typical mistakes and how to prevent them:

• 🔧 Replacing only the sensor without checking the wiring. Even a new sensor will not work correctly if the wires are damaged.
• 🔄 Failure to comply with timing marks. On engines VQ a shift of 1 tooth in the chain leads to an error 0345 And P0011.
• 💻 Ignoring ECU software updates. On Nissan Qashqai J11 after 2017, the error can be eliminated by updating the firmware to the version ECU-2020+.
• 🛠️ Use of non-original spare parts. Cheap sensors CMP often give false signals, especially at low temperatures.

Critical error: on engines YD25DDTi (diesel) ignoring error 0345 can lead to destruction of the turbine due to untimely opening of the EGR valve.

Prevention of error 0345 on Nissan

To minimize the risk of an error occurring, follow these guidelines:

• 📅 Every 60–80 thousand km Check the condition of the timing belt/chain and tensioner.
• 🔌 Once a year clean the sensor contacts CMP from oxidation (use WD-40 or CRC Contact Cleaner).
• 🛢️ Use quality oil (For example, Nissan Strong Save X 5W-30) to reduce camshaft wear.
• 💻 Avoid "left" firmware. Chip tuning should only be performed with a backup copy of the stock software.

On models with a timing chain drive (for example, Nissan X-Trail T32) pay attention to noises on cold start - they can signal chain stretch long before an error occurs 0345.

FAQ: Frequently asked questions about error 0345

Is it possible to drive with error 0345?

Short term - yes, but not recommended. Driving for a long time with this error leads to:

• Increased fuel consumption (up to +20%).
• Overheating of the catalyst due to suboptimal combustion of the mixture.
• Risk of collision of pistons with valves when the timing phases are shifted.

If the error is accompanied by knocking or vibration, the movement must be stopped!

How much does it cost to repair error 0345 in the service?

The cost depends on the reason:

• Replacing the CMP sensor: 1500–3000 rub. (with work).
• Wiring repair: 2000–5000 rub.
• Replacing the timing chain: 15,000–30,000 rub. (including components).
• Flashing the ECU: 3000–8000 rub.

On Nissan Patrol Y62 with engine VK56VD repairs will cost more due to the difficulty of accessing the timing belt.

Can error 0345 appear after washing the engine?

Yes, if water gets into the sensor connector CMP or to the ECU contacts. In this case:

1. Dry the connectors with compressed air.
2. Process contacts CRC Contact Cleaner.
3. Reset the error using the scanner.

If the error persists, check the sensor for a short circuit.

How to reset error 0345 without a scanner?

On most models Nissan You can reset the error by disconnecting the battery terminal for 10–15 minutes. However, this method only works if the problem is temporary (for example, signal failure). If the cause is mechanical or electrical, the error will return.

Important: After disconnecting the battery, you may need to throttle learning (on engines with electronic throttle).

Is the CMP sensor from Renault suitable for Nissan?

Yes, many sensors are interchangeable. For example:

• Sensor from Renault Megane 3 (article 8200837577) suitable for Nissan Qashqai J11 with engine MR20DE.
• Sensor from Renault Koleos (article 23731-4M000) compatible with Nissan X-Trail T32.

Before purchasing, check the resistance and shape of the connector!