Diagnostic code appears P1564 by car Nissan Qashqai often becomes a cause of serious concern for owners. This light indicates a malfunction in the throttle control system, which can lead to loss of power, unstable engine operation, and even a limp mode. Unlike simple sensor errors, P1564 affects a key element of the intake system that requires a careful approach to diagnosis.
Many car owners mistakenly believe that it is enough to reset the error with a scanner for the problem to disappear forever. However, in the case of code P1564, this is only a temporary measure, since the cause lies in physical wear of components or electrical circuits. Without identifying the root cause, the engine management system Nissan will detect a failure again after a few hundred kilometers.
In this article we will analyze in detail all aspects of the occurrence of this error, from electrical circuits to mechanical breakdowns of the actuator. You will learn how to correctly carry out initial diagnostics, what tools you will need for testing, and whether you can solve the problem yourself without contacting a specialized service.
The essence of the P1564 code and how the system works
Error code P1564 in technical documentation Nissan stands for "Throttle Control System: Open Circuit or Short Circuit". This parameter controls the operation of the electronic damper drive, which is responsible for dosing the air entering the cylinders. The ECU (electronic control unit) constantly compares the specified damper position with the actual position received from the potentiometers.
If the difference between these values exceeds the acceptable limits, or if the signal from the throttle position sensor (TPS) disappears, the computer detects a failure. In modern models Qashqai With MR20DE or QR25DE series engines, this system works in conjunction with the accelerator pedal to create fully electronic fuel control.
It is important to understand that P1564 does not always mean a breakdown of the throttle motor itself. Often the problem lies in the wiring, connectors, or even contamination of the inner surface of the case. The critical factor is that when this code appears, the engine may be forced to limit RPM to prevent damage to the catalytic converter.
- ⚙️ The ECU receives a signal that the valve opening angle does not correspond to the command
- 🔌 The integrity of the damper drive control circuit is checked
- 📉 A malfunction of the position sensors (TPS 1 and TPS 2) is detected
The main reasons for the failure
List of potential causes of the code P1564 on Nissan Qashqai is quite extensive and ranges from banal contamination to serious mechanical damage. The most common problem is the accumulation of carbon and oil deposits on the edges of the throttle valve, which makes it difficult for it to rotate freely. The electronics tries to compensate for the resistance, but if the motor fails, an error is triggered.
The second most popular reason is a violation of the contact connection. The connectors on the throttle assembly are exposed to high temperatures, which over time leads to oxidation of the contacts or melting of the plastic. It is also worth paying attention to the condition of the wiring harness going to the throttle body, especially in kinks.
Less common, but critical reasons include failure of the drive motor itself or failure of position sensors inside the assembly. In rare cases, the problem may be hidden in the incorrect operation of the ECU itself, although this happens extremely rarely if the wiring is working properly.
- 🧹 Heavy contamination of the throttle body
- 🔥 Oxidation or melting of contacts in the connector
- ⚡ Broken wire in the drive control harness
- 🔧 Wear of gears inside the actuator
- Check Engine light came on
- The car has lost power
- Dips during acceleration
- Engine stalls at idle
Vehicle symptoms and behavior
When the code P1564 activated, vehicle behavior Nissan Qashqai changes quite noticeably, which is difficult not to notice even for an inexperienced driver. The very first and most obvious symptom is the Check Engine light on the dashboard coming on. However, in addition to the visual signal, the car begins to behave inappropriately.
The engine often goes into emergency mode (Limp Mode), in which the speed does not rise above 2000-2500 rpm, and the car loses a significant part of its power. This is a protective feature designed to prevent further damage to engine components. The driver notices that pressing the gas pedal does not produce the expected acceleration.
Another characteristic symptom is unstable idling. The speed may fluctuate, the engine may stall when stopping or trying to start. Sometimes you can hear a characteristic clicking sound from the throttle body area, which indicates that the drive is trying to overcome mechanical resistance.
⚠️ Attention: If you ignore error P1564 and continue to operate the vehicle in emergency mode, there may be increased formation of carbon deposits in the cylinders and failure of the catalytic converter due to an enriched fuel mixture.
- 🚨 Check Engine light stays on or flashes
- 📉 Sharp drop in power and inability to accelerate
- 🔄 Floating idle speed or spontaneous stopping of the internal combustion engine
Step-by-step fault diagnosis
The first step in fixing the error is P1564 is a visual inspection of the throttle assembly and adjacent wiring. You need to remove the plastic air duct and carefully inspect the connection connector to the throttle. Look for signs of melting, corrosion or mechanical damage to the wire insulation.
Next you need to check the cleanliness of the damper. To do this, you will need to remove the assembly (usually 4 bolts are unscrewed) and inspect the inside. If black deposits are visible on the edges of the damper, which prevents it from closing or opening completely, this may be the cause of the malfunction. In this case, thorough cleaning with a special product is required.
If the visual inspection does not produce results, the next step is to check the electrical parameters. You will need a multimeter to measure resistance and voltage. It is necessary to check the power supply to the throttle valve connector and the integrity of the signal circuits to the computer. It is also worth checking the resistance of the drive motor itself, comparing the obtained values with factory standards.
☑️ Check before replacing parts
How to check the resistance of the throttle motor?|Disconnect the connector from the throttle body. Set the multimeter to resistance measurement mode (ohms). Touch the probes to the motor power pins (usually pins 1 and 2 or 3 and 4, depending on the circuit). The value should be in the range of 2-8 ohms. If the multimeter shows infinity - a break, if zero - a short circuit.-->
Throttle cleaning and adaptation procedure
Often the cause of the P1564 error code is simply dirt, and a good cleaning can completely solve the problem. Use a specialized carburetor or throttle body cleaner that does not leave a residue when it dries. Apply the product to a soft, lint-free cloth and gently wipe the inside walls of the case and the damper itself. Be extremely careful not to damage the sensitive position sensor.
After cleaning and assembling the unit, it is necessary to carry out the adaptation procedure. Without this, the ECU will not know the new position of the damper “zero point”, and the error may return or the engine will operate unstably. By car Nissan Qashqai the adaptation procedure can be performed either with a diagnostic scanner or manually through a sequence of actions with the ignition key and gas pedal.
Manual adaptation requires precise sequencing
Turn the ignition on for 3 seconds, turn it off, wait 10 seconds, then turn it on again and press the gas pedal several times. However, the most reliable way is to use professional equipment, such as CONSULT-III or its analogues, which allow you to fully calibrate the sensors.
⚠️ Caution: Do not try to force open or close the throttle manually with a screwdriver or your fingers without turning off the power, as this may cause the gearbox gears inside the drive to break.
Proper cleaning and proper adaptation eliminate P1564 in 70% of cases due to contamination or calibration failures, without the need to replace expensive parts.
Replacing the throttle valve and selecting parts
If cleaning and electrical checks do not produce results, the throttle assembly itself is most likely faulty. In this case, the unit will need to be replaced. When choosing a new part, it is important to consider that Nissan Qashqai Chokes from different manufacturers are installed, but original spare parts always provide the best compatibility.
The original spare part has a catalog number, which can be found in the service book or on the old unit. However, there are also high-quality analogues from brands such as Denso or Hitachi, which are often suppliers to the Nissan assembly line. It is important to avoid cheap Chinese knockoffs as they often have inaccurate position sensors which will cause the error to reappear.
When installing a new unit, be sure to replace the gasket to avoid suction of unaccounted air. After installation, it is necessary to carry out the procedure of “learning” the closed position of the throttle valve and “learning” the volume of supplied air. This can be done through a dealer scanner or special programs for OBDII adapters.
| Part type | Benefits | Disadvantages | Recommendation |
|---|---|---|---|
| Original (Nissan) | Perfect compatibility, long service life | High cost | Choice for long-term use |
| Original (Denso/Hitachi) | Quality like the original, affordable price | Harder to find in stock | The optimal choice in terms of price/quality ratio |
| Chinese analogues | Low price | Low quality, frequent errors | Not recommended for installation |
System prevention and maintenance
To avoid the error reappearing P1564, it is necessary to regularly carry out preventive maintenance of the intake system. Once every 20-30 thousand kilometers it is recommended to inspect and, if necessary, clean the throttle valve. This is especially true for cars with a mileage of more than 100 thousand kilometers.
It is also important to monitor the condition of the air filter. A clogged filter creates increased vacuum and allows more dust to be sucked in, which settles on the throttle walls. Timely replacement of the filter significantly extends the life of the throttle assembly.
Use only high-quality gasoline and periodically add additives to clean the fuel system. Although they do not directly remove carbon deposits from the throttle body, they help keep the injectors and combustion chambers clean, which indirectly affects the overall health of the intake system.
- 🛢️ Using high-quality fuel without additives with high lead content
- 🌬️ Regular replacement of the air filter (every 15-20 thousand km)
- 🧹 Preventative cleaning of the throttle at every maintenance
FAQ: Frequently asked questions
Is it possible to drive with error code P1564?
Technically the car can move, but often it goes into emergency mode with limited speed. This is dangerous, especially when overtaking or emergency acceleration is necessary. It is recommended to eliminate the cause as soon as possible.
Why does the error appear after cleaning the throttle?
Most often this occurs due to the fact that the throttle valve adaptation (learning) procedure was not carried out. The ECU continues to operate with old parameters that no longer correspond to the physical position of the clean throttle.
How much does it cost to replace a throttle body on a Qashqai?
The cost of original spare parts varies from 15,000 to 25,000 rubles, depending on the year of manufacture and engine. Replacement and adaptation work in the service will cost an additional 3,000 - 5,000 rubles. Analogues are cheaper, but require caution when choosing.
Is it possible to do without a scanner to reset the error?
You can reset the error by removing the battery terminal for 10-15 minutes, but this does not guarantee that the error will not return. Without diagnosing the cause of the failure and adapting the new damper position, the problem is likely to persist.
Does P1564 affect fuel consumption?
Yes, if the throttle valve is faulty, the ECU often goes into enrichment mode to stabilize engine operation, which leads to a significant increase in fuel consumption, sometimes 20-30% above normal.