Car owners Nissan often encounter a situation where the “Check Engine” indicator lights up on the dashboard and the scanner issues a code P0335. This error indicates a malfunction of the crankshaft position sensor (CPS) circuit, which is a critical element for the operation of the ignition and fuel injection system.
Without correct data from this sensor, the electronic control unit (ECU) cannot synchronize engine operation, which leads to the inability to start the engine, sudden drops in power or its complete stop while driving. Owners Nissan Qashqai, X-Trail and other models, it is important to understand that ignoring this problem can lead to expensive repairs, so diagnostics must be carried out immediately.
The essence of the problem and the principle of operation of the sensor
The crankshaft position sensor, often referred to as CPPS, is an inductive or magnetoresistive sensor mounted in close proximity to the crankshaft gear (rotor). Its main task is to read the rotation speed and the exact position of the shaft at each moment in time, transmitting these impulses to engine control unit.
When the ECU receives a signal with a frequency that does not correspond to the actual rotation, or the signal disappears completely for a long time, the system records an error P0335. This occurs if there is no signal for a certain period of time exceeding a threshold set by the manufacturer. As a result, the engine goes into emergency mode or stalls.
A feature of many engines Nissan is that the DPKV is the only sensor without which starting the engine is impossible in principle. While the failure of other sensors can only lead to a deterioration in dynamics, the failure of this particular sensor completely blocks the operation of the injection and ignition system.
The main reasons for the failure
List of reasons causing the code to appear P0335, is quite wide and ranges from simple mechanical contamination to complex electrical faults. Most often, the problem lies in physical damage to the sensor itself or its wiring. High temperatures in the engine compartment over time make the insulation of the wires brittle, which leads to short circuits or open circuits.
Another common cause is that the magnetic tip of the sensor is contaminated with metal shavings or dirt. During engine operation, metal particles can get into the gap between the sensor and the toothed disk, interfering with signal reading. It is also worth paying attention to the condition of the toothed disk: mechanical damage, chips or missing teeth will lead to loss of signal.
In rare cases, the problem may be with the electronic control unit itself. The internal components of the ECU may fail due to power surges or moisture, resulting in the inability to process the incoming signal. However, before replacing an expensive unit, it is necessary to exclude all external factors.
- 🔧 Oxidation of contacts in the sensor connector due to moisture or oil.
- 🔌 Breakage of internal wiring in the harness going to the sensor, especially in places of bending or fastening.
- ⚙️ Displacement of the sensor relative to the toothed disk, increasing the gap beyond the permissible values.
Diagnostics and testing of the sensor circuit
The first step when an error occurs is a visual inspection. You need to get to the sensor, which is usually located on the gearbox housing or on the cylinder block near the flywheel. Assess the integrity of the sensor body, the presence of cracks and the condition of the protective cap of the connector.
To accurately check the electrical circuit, you will need a multimeter. It is necessary to disconnect the connector and measure the resistance of the sensor winding itself. Resistance values may vary depending on the motor model, but are typically in the range of 200 to 1000 ohms. If the device shows “infinity” or zero, the sensor is faulty.
In addition, it is important to check the integrity of the wires coming from the sensor to the ECU. To do this, you need to test the circuit for an open circuit and check for ground or a short circuit to the body. Pay special attention to places where wiring runs through body partitions or near moving engine parts.
⚠️ Attention! When checking sensor resistance, make sure the engine is completely cool. Heating the case can distort the multimeter readings, leading to misdiagnosis and unnecessary replacement of a working part.
- 2.0 (MR20)
- 2.5 (QR25)
- 1.6 (HR16)
- 3.5 (VQ35)
Step-by-step instructions for replacing the sensor
If diagnostics confirm that the sensor is faulty, it must be replaced. Replacement process on most models Nissan does not require complex equipment, but access to the sensor may be limited by other units. Before starting work, be sure to disconnect the negative terminal of the battery.
Снимите разъем с датчика, нажав на фиксатор. Открутите крепежный болт, который обычно имеет размер под ключ на 10 или 12 мм. Carefully remove the old sensor, being careful not to damage its fragile tip. Место установки тщательно очистите от грязи и масла.
Install the new sensor, making sure the O-ring (if designed) is in place and not twisted. Tighten the mounting bolt to the recommended torque, but do not over-tighten it to avoid stripping the threads in the unit body. Connect the connector until you hear a characteristic click.
☑️ Replacement of DPKV
⚠️ Attention! When installing a new sensor, make sure it fits snugly into the seat. Any gap between the sensor housing and the unit can lead to vibrations and subsequent destruction of the housing or incorrect reading of the signal.
Resetting errors and testing after repair
After replacing the sensor, it is necessary to clear the error memory in the ECU. To do this, you can use a professional diagnostic scanner or, in some cases, just remove the battery terminal for 10-15 minutes. However, removing the terminal may reset other systems, so using a scanner is preferable.
Start the engine and let it idle. Listen to the engine: it should run smoothly, without misfires or extraneous noise. Pay attention to the "Check Engine" light - it should go out after a few starting and stopping cycles.
Take a test ride, varying the driving modes: acceleration, braking, driving uphill. This will allow you to check the operation of the sensor under load. If the error P0335 does not return within several days of operation, the repair can be considered successful.
| Parameter | Meaning | Comment |
|---|---|---|
| Winding resistance | 200-1000 Ohm | Depends on engine model |
| Disc clearance | 0.5 - 1.5 mm | Usually provided with a gasket |
| Supply voltage | 5V / 12V | Depends on sensor type (active/passive) |
| Connector type | 2-3 contacts | Check pinout before replacing |
What should I do if the error returns immediately after replacement?|If the P0335 error returns immediately after replacing the sensor, check the continuity of the wiring harness to the ECU. Perhaps the break is located deep in the wiring, and not at the connector. Also check the toothed disc for damage or contamination. In rare cases, the problem may be in the engine control unit itself.-->
Features of operation on various Nissan engines
On series engines HR (1.6 liters) and MR (2.0 liters), which are installed on Nissan Qashqai and X-Trail, the sensor often fails due to overheating. In these motors, the sensor is located close to the exhaust manifold, which accelerates the aging of the wire insulation.
For series engines VQ (3.5 liter V6) used on Maxima and Patrol, there is another problem
wear of the crankshaft toothed disc. Due to high loads, the teeth can grind down, which leads to loss of signal even with a working sensor. In such cases, replacement of the flywheel or crankshaft is required.
On diesel engines YD and MR19DDT The sensor also performs the function of synchronizing the high pressure fuel pump. An error here can lead not only to engine shutdown, but also to incorrect operation of the injection system, which can result in unburnt fuel entering the exhaust system.
Prevention and maintenance recommendations
To avoid the error reappearing P0335, it is recommended to regularly inspect the sensor wiring at each maintenance. Pay special attention to areas where wiring passes through rubber seals or is near hot engine components.
If you are overhauling an engine, it is strongly recommended to check the condition of the crankshaft toothed disc. Replacing the sensor will not hurt, since old sensors often have a worn-out magnetic element that may fail in the coming months.
Use only original spare parts or proven analogues from reputable manufacturers. Cheap non-original sensors often have unstable resistance characteristics and quickly fail, especially in Russian roads and climate.
⚠️ Attention! Never try to start the engine for more than 10 seconds at a time if the P0335 code persists. This can cause the starter or ignition coils to overheat and fail due to repeated attempts to start.
Regular wiring diagnostics and the use of high-quality spare parts are the key to long-term operation of the Nissan engine synchronization system.
Frequently Asked Questions
Is it possible to get to the service center with error P0335?
If the engine is running, then theoretically it is possible, but it is highly not recommended. The car can stall at any time, especially when accelerating or at a traffic light, which will create an emergency situation. It's better to call a tow truck.
Why does the error only appear when the engine is hot?
This is a classic sign of a broken wire or a malfunction of the sensor itself. When heated, the metal expands, and a microcrack in the wire or winding of the sensor can disperse, interrupting the circuit. After cooling, contact can be restored.
Do I need to replace the sensor and crankshaft disc together?
If the sensor fails due to wear or contamination, it is enough to replace only it. If the problem is damage to the disk teeth, then replacing the disk is necessary. Sometimes the sensor is changed prophylactically during a major overhaul.
Does P0335 affect fuel consumption?
Yes, if the engine can be started and it operates in emergency mode, fuel consumption can increase significantly due to non-optimal ignition timing and operation of the system on emergency maps.
Can I replace the sensor myself?
Yes, replacing the sensor does not require complex equipment. It is enough to have a set of keys, a multimeter and a diagnostic scanner to reset errors. However, access to the sensor may be difficult on some models.