Trouble P0441 - Evaporative Emission System - Incorrect Purge Flow

Modern technologies are developing, equipment is becoming more complex and advanced, and progress does not bypass vehicles.

Carburetor cars were very simple, and any driver could figure them out, but on cars with injection engines, new components were added, in particular, a fuel vapor recovery system appeared, the main element of which is the adsorber.

The main task of this circuit is to remove fuel vapor from the tank into the intake manifold at the time the internal combustion engine is started, and the adsorber purge valve plays an important role here. This article will discuss the operating principle of this system, the procedure for replacing the valve, and possible malfunctions that may arise during the operation of a Lada Kalina passenger car.

How does a mechanic diagnose a P0441 code?

• First, the mechanic will connect the OBD-II scanner to the vehicle's diagnostic port and read all the stored data and error codes.
• He will then clear the error code from the ECM and test drive the vehicle.
• If P0441 appears again, have a mechanic visually inspect the evaporative emission system.
• The mechanic will then check the fuel pressure sensor in the fuel tank for damage.
• He will also check the fuel cap.
• He will then check the operation of the vacuum switch and purge valve.
• If no problem is found, the mechanic will perform a thorough check of the evaporative emission system to check for leaks.

Common errors when diagnosing code P0441

The most common mistake when diagnosing a P0441 code is not following the diagnostic protocol, as well as not performing a smoke leak test.

Also, mechanics often assume that the problem is a damaged fuel cap, but do not perform thorough diagnostics to verify this. It is imperative to check the fuel tank cap for leaks, for example using a vacuum tester.

Replacing the adsorber purge valve on Kalina

If the check shows that the Evap-Solenoid is faulty, the part must be replaced (catalog number - 11181164200). There is no point in repairing the device:

• the price of the valve is in the range of 400-800 rubles;
• You can buy the device in almost any store that sells VAZ spare parts;
• changing the KPA is very easy and simple.

But before making a replacement, it would be a good idea to check the control circuit; quite often the valve does not work due to a break in the wires going to it. To complete the work, you will not need a pit or a lift, and the procedure itself will take no more than one to two hours, even if the operation is performed by an inexperienced worker without metalworking skills.

We change the valve as follows:

• turn off the ignition, raise the hood;
• find Evap-Soleno />
• We dismantle the valve together with the tube, and the disassembly is almost complete.

Replacing the purge valve could be considered a very simple task, if not for one “but” - it is very difficult to remove the plastic tube from the CPA without damaging it, and it does not come with the new valve. There are two options here:

• try to carefully heat the connection with a hairdryer and pull off the pipe;
• cut the tube at the connections, and instead buy an ordinary fuel hose with a diameter of 8 mm and two clamps.

Having measured the required length of the hose, cut it, connect it to the valve and connector, we get approximately the same design as in the figure below.

We install everything in place, start the engine, and test the car on the move.

What repairs can fix the P0441 code?

• Replacing the fuel tank cap
• Repairing a leak in the fuel vapor recovery system
• Repair or replace damaged evaporative emission system components
• Replacing the purge valve
• Vacuum switch replacement
• Repair or replacement of wires

Additional comments for troubleshooting P0441

To properly diagnose the P0441 trouble code, a mechanic will need an advanced OBD-II scanner. It is necessary to check the operation of the vacuum switch and purge valve, as well as to carry out certain tests.

In some cases, a smoke leak test may be necessary to detect a leak in the evaporative emission system. This test can help detect even the smallest fuel vapor leak. The fuel tank shall not be completely empty or completely full during this test.

The adsorber valve is knocking on Kalina

Many owners of Lada Kalina cars are faced with a problem - while the engine is running, an incomprehensible clattering sound is heard from under the hood; when identifying the cause of the noise, it turns out that the sound comes from the purge valve. Although the knocking does not affect the operation of the car in any way, some car owners are annoyed by it, and car owners want to get rid of it. You can “overcome” the unpleasant clattering sound; you just need to do the following:

• remove the valve and inspect it carefully;
• Find the adjusting screw on the side; it will be filled with epoxy resin on top;
• pick out the epoxy, tighten the screw half or three-quarters of a turn;
• install the valve in place, check for changes in the operation of the internal combustion engine.

You cannot tighten the screw any more, in this case the control panel will stop opening, and the engine diagnostic lamp on the instrument panel will record an error. It is also worth noting that some drivers confuse the clatter of the solenoid valve with detonation, but in principle, the sounds can be distinguished. You just need to take into account that detonation occurs under load, for example, when a loaded car is moving uphill, in this case they say “fingers are ringing.”

Diagnostics

If you notice that something is wrong with the operation of the Lada Kalina vehicle, then it makes sense to diagnose the car. As a rule, all breakdowns appear immediately after checking the car. You can ask for help in carrying out diagnostics at a service station, where you will pay a certain amount for this service, or you can do everything yourself. Of course, with the help of special equipment there is a greater chance of identifying a malfunction, since when checking independently there is a possibility of obtaining inaccurate data.

VAZ Kalina error codes: causes and their elimination

VAZ Lada Kalina is equipped with a standard computer immediately at the enterprise. Moreover, it is a high-quality brand, has wide functionality, and can satisfy many car drivers. But for those who want more, it is recommended to purchase a device with serious functionality, for example, the Gamma on-board computer.

It has much more functionality compared to a standard computer. It displays and resets fault codes, and at the same time makes diagnostics. It is launched on the dashboard by pressing a key to reset the daily mileage, and at the same time turning on the ignition. After pressing the key, the firmware version of the on-board computer (BC) and error codes, if any, will be shown on the computer screen.

Possible error codes Kalina

What error codes exist for VAZ Kalina?

1. The highest voltage on-board network of the machine.
2. Fuel sensor error (for example, within 20 seconds it was detected that the circuit was broken).
3. Coolant temperature sensor error.
4. The motor is overheated.
5. Oil pressure is in poor condition.
6. The brake system has broken down.
7. Battery low.

What should I do to troubleshoot? You should hold down the key and turn on the ignition, but do not start the car. The arrows on the dashboard will move and the lights will turn on. After this, you need to press one of the keys on the switch, which is located under the steering wheel. Then the arrows will be at the initial position, and errors will be shown on the display.

Let's give advice to those who buy a used VAZ car - most drivers don't even think about the fact that there is an option for diagnosing and resetting Lada Kalina errors.

And therefore, before buying a VAZ, you should run this option to find out everything about the past of the car you are purchasing.

The modern automotive industry is a very developed industry; it is almost always an excellent assistant to any car owner.

This does not depend on the make of the car; the presence of BC is an excellent feature of almost any car produced over the last ten years. A similar system is no exception for VAZ. Many people know what an on-board computer is, but not everyone knows how to evaluate errors that have occurred and determine their significance. Let's look at the above errors.

It should be noted that many of the errors characteristic of VAZ are understandable. For example, a temperature sensor error, the BC can issue it when the motor is cooled. But it happens that the computer gives an error falsely.

For example, once the motor was overheated, the computer suddenly notifies about the error, even if there is none. That is, errors can occur if the BC remembers information about an overheated motor.

And therefore, when this problem has been fixed, it is better to reset all BC readings.

And to fix it, you should press the Reset key - it is located under the control buttons of the on-board computer. But if the faults are not identified, you need to ask a professional for help. You should also pay special attention to the errors of the machine's bookkeeping system if it has already been used and was purchased secondhand.

Vehicle diagnostics and troubleshooting

If you nevertheless decide to buy a used car, then you should definitely make a diagnosis, paying attention to any Lada error codes that appear on the device display.

Information about existing errors will be very useful, be sure to pay special attention to this.

To diagnose and find out information, you should contact a car service center if there is no special insert on the used car you are buying.

In fact, such a procedure is a huge list of information that can tell about any possible danger. Usually this is not given importance, but in vain.

For example, if a car’s BC states that the airbags are faulty, you definitely need to check this.

Correction: what needs to be done? Immediately press the left button and the right one, from this press the on-board computer adjusts the selected parameter.

Then pressing the keys left or right changes the parameters. After pressing simultaneously, you exit from the adjustment. Reset.

By pressing the left and right keys simultaneously, the options displayed on the screen will be reset. If everything is done in the “System error” mode, after that the error disappears.

If faults actually exist, the error will remain in memory until reset occurs.

• If the BC does not turn on, the causes of the problem are:

• there is no electric current in the BC connectors;
• there is no contact in the terminals.

1. BC cannot diagnose the reasons for this:
2. BC cannot calculate the speed of the car, the reasons for this problem are:
3. BC cannot calculate the remainder in the fuel tank, reasons:
4. The BC incorrectly shows how much fuel is left in the tank, the reasons for this are:

• there is no wire in the wiring at the 8th contact and the 9th terminal in the on-board computer;
• The car panel is showing incorrectly.

• There is no BC screen backlight, reasons:
• The thermometer shows incorrectly, reasons:

• the wire has broken in the temperature detection sensor;
• incorrect contact with the on-board computer.

1. No voice accompaniment, reasons:

• speaker is faulty;
• the software has crashed;
• The voice accompaniment is not reproduced (you must press the “up” key and hold it for more than three seconds).

• BC writes incorrectly, the program has gone wrong, etc., reasons:

• The on-board computer is not connected or there is no contact with it;
• there is no contact in the connected battery terminal (the contact should be securely fixed).

1. Initialize the BC:

• previous settings will be reset;
• reset all parameters for the previous ride;
• set the clock to 8 hours 00 minutes;
• The alarm clock should be at zero, its notification is disabled.

Malfunctions in the fuel vapor recovery system of the Lada Kalina

Since the solenoid valve itself is not a complex device, it has few malfunctions as such - it may not open or close when necessary, or may freeze in a certain position. But the culprit of the breakdown may not only be Evap-Solenoid; the gasoline vapor recovery system does not work correctly for other reasons:

• connecting pipes are pinched or clogged;
• normal vacuum is not created in the system;
• due to an open circuit, there is no voltage on the valve;
• the carbon filter is completely clogged (which is rare);
• The control unit malfunctions.

If the CPA is stuck in the open position and does not block the channel, the following defects may occur:

• the fuel mixture becomes richer, causing “blackness” to appear on the electrodes of the spark plugs;
• the engine begins to operate unstably, this is especially noticeable at idle;
• gasoline consumption increases;
• The throttle response of the internal combustion engine decreases.

When the EVAP channel is constantly blocked by the purge valve, excess vapor pressure is created in the gas tank, due to this:

• there is a risk of fuel pump failure;
• The fuel level sensor may fail.

It should be noted that purge occurs in a certain mode after starting the engine, the program is executed depending on the crankshaft speed, and the system does not work at idle. An impulse arrives at the CPA if:

• the coolant has heated to a temperature of at least 75 degrees Celsius;
• the throttle valve is open at least 4%;
• the car is moving at a speed of more than 10 km/h (but this is not a necessary condition).

Problems in the electrical part of the EVAP are detected by the control unit, and the Check Engine warning lamp lights up on the instrument panel. The fault code can be determined using a special diagnostic scanner or a computer with a program installed; the most common errors in the vapor recovery system detected by the diagnostic device are P0441 and P0455.

New Lada: Is it worth doing anti-corrosion treatment on the car?