Error P1110 by car Nissan Skyline The V35 with the VQ35DE engine is one of the most common and warning signs encountered by owners of these legendary cars. This code indicates a malfunction in the valve control system VVEL (Variable Valve Event and Lift), responsible for changing valve timing and valve lift. When the electronic control unit (ECU) detects a discrepancy between the command and the actual position of the mechanism, the Check Engine indicator lights up on the instrument panel and the car goes into emergency mode.
Ignoring this problem can lead to a significant decrease in power, increased fuel consumption and, ultimately, complete failure of the expensive gas distribution mechanism. Nissan Skyline The V35 is a technically complex vehicle where system precision is critical. Owners need to understand that the P1110 code rarely occurs on its own without physical causes such as oil contamination, worn parts, or wiring problems.
The essence of error P1110 and the operation of the VVEL system
System VVEL is a highly complex engineering unit that allows the VQ35DE engine to adapt to any driving conditions, changing not only the advance angle, but also the valve lift height. Error P1110 is directly related to valve position sensor VVEL, which transmits data about the current position of the mechanism to the ECU. If the sensor shows a value outside the permissible limits, or the signal is interrupted, the system records a failure.
In most cases, the problem lies in the sensor itself, which loses accuracy over time due to vibrations and temperature changes. However, you should not write off mechanical failures of the drive. VVEL mechanism operates under high oil pressure, and any deviations in its operation are immediately reflected in the sensor readings. The ECU compares the requested position with the actual one and, not seeing a match, issues code P1110.
It is important to understand that this sensor works in conjunction with the oil control solenoid valve. If the oil pressure is insufficient, the mechanism will not be able to move to the desired position and the sensor will show an error.
It's also worth noting that in some scenarios, the problem may not be with the sensor, but with the wiring going to it, especially if the car is more than 15 years old.
- 🔍 The VVEL valve position sensor may have internal contact wear.
- 🔧 The mechanical drive may jam due to lack of lubrication.
- ⚡ Damage to the wiring harness or oxidation of connectors often simulates sensor failure.
The main reasons for the failure
When diagnosing Nissan Skyline V35 with code P1110 there are many factors to consider. The most common reason is failure of the position sensor. Over time, its internal electronics degrade and it begins to produce incorrect voltage readings. This is especially true for high mileage vehicles where the sensor has been subjected to thousands of heating and cooling cycles.
The second most common cause is contamination of the oil control system. The VVEL mechanism requires clean, high quality motor oil. If you haven't changed the oil for a long time or used low-quality lubricant, deposits may form in the system. These deposits interfere with the free movement of the mechanism rod, which leads to desynchronization with the sensor readings.
Don't forget about electrical problems. The connectors on the VQ35DE motor are exposed to high temperatures, which over time makes the plastic brittle and the contacts oxidized.
Sometimes the problem lies in the ECU itself, which may misinterpret the signal due to software or hardware failures, although this happens extremely rarely.
- 🛢️ Oil contamination with combustion products and soot.
- 🔌 Oxidation of contacts in the VVEL sensor connector.
- ⚙️ Wear of gears of the valve timing mechanism.
Symptoms of malfunction and vehicle behavior
When on Nissan Skyline V35 error P1110 appears, the behavior of the car changes quite noticeably. The very first thing you will notice is the illuminated Check Engine light on your dashboard. This is a signal that the computer has detected a critical error and written the code into memory. However, visual signs are often accompanied by tangible changes in dynamics.
The vehicle may enter Limp Mode. In this mode, the control unit forcibly limits engine speed, usually to 3000-3500 rpm, to prevent possible destruction of the VVEL mechanism. The loss of power becomes noticeable when trying to accelerate, especially at high speeds where the VVEL system should be most active.
The engine may operate unstably at idle, vibrations and floating speed are possible.
Fuel consumption may increase as the ECU tries to compensate for the error by switching the engine to fixed valve timing mode.
In some cases, when trying to start the engine, it may take longer than usual due to incorrect injection timing.
⚠️ Attention: If you notice that the car has lost power and the speed does not rise above 3000, immediately stop driving vigorously. Long-term operation in emergency mode can lead to overheating and scuffing in the engine due to improper gas distribution.
- 📉 Significant loss of power during acceleration.
- 🔄 Floating speed at idle.
- 🔊 Unnatural noises from under the valve cover when the engine is running.
- Check Engine light came on
- The car lost power
- Unstable idle
- Increased fuel consumption
Step-by-step system diagnostics
To accurately identify the cause of error P1110 on Nissan Skyline V35 requires a comprehensive diagnosis. Start by connecting a professional OBD-II scanner that can read not only error codes, but also parameters in real time. Check for other associated errors that may indicate oil pressure or power problems.
Next, you need to check the electrical circuit of the sensor. Remove the connector from the VVEL sensor and visually inspect it for oxidation or mechanical damage. Measure the voltage at the contacts with the ignition on. If the voltage is missing or unstable, the problem lies in the wiring or fuses.
Check the resistance of the sensor itself by comparing it with the factory specifications specified in the service manual.
If the electrical part is ok, proceed to the mechanical check. Remove the valve cover and inspect the VVEL mechanism for binding.
☑️ Electrical diagnostics
How to check the resistance of the VVEL sensor?
Disconnect the sensor connector. Use the multimeter in resistance mode. Connect the probes to the sensor contacts. Normal resistance should be in the range of 2 to 5 kOhm (the exact value depends on the engine temperature). If the resistance is infinite (open) or close to zero (short circuit), the sensor is faulty and must be replaced.
Pay special attention to oil pressure. Use a mechanical pressure gauge to ensure the pressure is correct. If the pressure is low, the VVEL mechanism will not work correctly, even if the sensor is working properly.
- 📏 Measuring the sensor supply voltage (should be about 5V).
- 📉 Checking the oil pressure in the system (minimum 2 atm at idle).
- 🔍 Visual inspection of the VVEL mechanism for jamming.
Before removing the valve cover, be sure to mark the position of the timing marks to avoid errors during assembly and subsequent engine synchronization.
Troubleshooting methods
Once the cause has been identified, repairs must begin. If the problem is the position sensor, it needs to be replaced. Original sensor Nissan It is not cheap, but the use of non-original analogues often leads to the reappearance of error P1110 after a short time.
If the problem is mechanical, more complex repairs may be required. Sometimes it is enough to clean the VVEL mechanism from carbon deposits and sludge using a special wash. However, in advanced cases, a complete replacement of the variable valve timing mechanism is required, which is an expensive procedure.
In some cases, flashing the ECU helps if the problem is caused by a software glitch or incorrect calibrations.
After the repair, it is imperative to reset the errors and carry out the training (adaptation) procedure for the VVEL system through a diagnostic scanner.
| Component | Problem Symptom | Elimination method | Complexity |
|---|---|---|---|
| VVEL sensor | Incorrect voltage readings | Replacing the sensor | Average |
| Wiring | Open or short circuit | Repair or replacement of harness | Low |
| VVEL mechanism | Jamming, backlash | Cleaning or replacing the unit | High |
| Oil pressure | Low pressure | Oil change, pump or engine repair | High |
Replacing the sensor is the easiest and cheapest way to resolve P1110, but only if the sensor is actually the problem.
Prevention and recommendations for use
To prevent P1110 from returning, strict engine operating procedures must be followed. VQ35DE. The most important thing is to regularly change the engine oil. Use only high-quality synthetic oils recommended by the manufacturer, and change them at least once every 7000-8000 km, since this engine is very sensitive to the quality of the lubricant.
Monitor the condition of the fuel system and ignition system. Misfires can lead to engine overheating, which negatively affects the operation of all gas distribution systems. Carry out computer diagnostics regularly to promptly notice the slightest deviations in the operation of the sensors.
Avoid aggressive driving on a cold engine until the oil has warmed up to operating temperature and filled all channels of the VVEL system.
If you notice the slightest suspicious sounds from the engine, stop immediately and check.
⚠️ Attention: The use of low-quality oil is the most common cause of failure of the VVEL mechanism. Saving on oil can lead to replacing the entire unit at a huge cost.
- 🛢️ Change the oil every 7000 km, using only recommended brands.
- 🔧 Check the condition of spark plugs and ignition coils every 20,000 km.
- 🌡️ Let the engine warm up before active driving.
What oils are suitable for VQ35DE?
For VQ35DE engines, it is recommended to use oils with a viscosity of 5W-30 or 5W-40. The ideal choice is oils with API SN or ILSAC GF-5 approvals. Avoid low viscosity oils (0W-20) as they may not provide sufficient pressure to operate the VVEL mechanism under high loads.
FAQ: Frequently asked questions
Is it possible to drive with error code P1110?
Short-term - yes, but only in economy mode. Driving for a long time with this error can lead to serious mechanical damage to the engine due to improper gas distribution. It is recommended to correct the problem as soon as possible.
How much does it cost to replace a VVEL sensor?
The cost of the sensor itself varies from 3,000 to 6,000 rubles, depending on the manufacturer. Replacing it costs from 2,000 to 4,000 rubles. The total repair cost usually does not exceed 10,000 rubles if the problem is only in the sensor.
Is it possible to reset the error without replacing parts?
If the error is caused by a temporary glitch or dirt in the oil, a reset may help. However, if the problem is physical (sensor or mechanism wear), the error will return immediately after several engine starting cycles.
Does P1110 affect fuel consumption?
Yes, fuel consumption may increase by 10-15%, as the engine goes into emergency mode with fixed phases, which reduces the efficiency of combustion of the mixture.
Do I need to do an adaptation after replacing the sensor?
Yes, after replacing the VVEL sensor, a training (adaptation) procedure via a diagnostic scanner is required. Without this, the engine may become unstable and the error may appear again.