Replacing the Lada Granta oxygen sensor - detailed instructions with photos and videos

With the adoption of Euro-3 standards by domestic manufacturers, exhaust gas purification systems are installed on mass-produced vehicles.

The so-called catalytic fillers are equipped with two oxygen sensors on the Lada Grant, which are located at the top and bottom of the perimeter of the catalyst. Accordingly, the upper one is called the control one, the lower one is called the diagnostic one.

Low-octane fuel and low fuel quality are the main factors contributing to the premature failure of oxygen sensors (hereinafter referred to as oxygen sensors or lambda probes).

The process of self-replacement is simple, but requires care on the part of the repairman.

Receiving pipe with neutralizer

Where are the oxygen sensors on the Lada Grant?

Regardless of the engine modification, the number of valves, the standard location of the lambda probe is in the engine compartment.

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Since the design provides for the presence of two controllers, the first is installed on top, directly on the exhaust manifold body.

The lower one, also known as diagnostic, is mounted in the exhaust pipe of the exhaust system. To ensure access, we first dismantle the plastic protection.

How to Troubleshoot or Reset Trouble Code P0036

Some suggested steps to troubleshoot and fix error code P0036:

1. Clear error codes from the car's computer memory.
2. Test drive the vehicle to see if the P0036 code appears again.
3. Perform a visual inspection and, if necessary, repair or replace damaged electrical wires.
4. Check the grounding and correct the problem if necessary.
5. If there is a problem with the PCM, reprogram or replace the engine control module.

Sequence of actions to independently replace the oxygen sensor on the Lada Grant

1. We place the car within the perimeter of the repair area, take basic safety measures, and fix the rear row of wheels to prevent any arbitrary rollback.
2. We remove the battery terminals to prevent a short circuit in the circuit.
3. If you have an 8-valve Lada Granta, then there is no decorative plate. In the 16-valve modification, we first snap off the plate, remove it, and then remove the receiver (key to “19”). It is located on the rear side of the engine compartment.

Location of the oxygen concentration control sensor

: 1 – junction of the sensor wiring harness block with the engine control system wiring harness block; 2 – plastic holder for the sensor wiring harness; 3 – control oxygen concentration sensor.

1. We squeeze the block with the wires on the sides, snap off the plastic clip, and remove the holder from the hole in the steering mechanism screen.

We take out the holder

1. Using a key set to “22”, unscrew the diagnostic DC from the hole in the catenary collector. Due to operation at high temperatures, DC often sticks to the metal base. We apply force and tear off the lambda probe.

Unscrew the diagnostic DC

1. From under the bottom of the car in the area where the right drive is located, unscrew the second (diagnostic) oxygen sensor with a key set to “17”. We first install the machine on the inspection hole and hang it using a hydraulic lifting mechanism. Visually, the recreation center on the Lada Granta is located after the gas neutralizer.

Disconnecting the rear suspension support of the power unit of the Lada Granta 2190 car: 1 - nut (part 1118-1001257) fixing the engine support; 2 - rear support (part 2190-1001033) of the power unit suspension

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The diagnostic sensor has a block with wires located in the engine compartment. The pinout is closer to the steering rack and the metal partition with the interior.

1. We press the latch and remove the block with wires.

Press the latch

1. Using a key set to “22”, unscrew the DC from the hole in the catenary collector.

1. We remove the lambda probe.
2. We carry out troubleshooting of the seat, check the integrity of the wiring and threads, and assemble the structure in the reverse order.

We carry out troubleshooting

Note to the driver! Before screwing the DC, be sure to lubricate the thread with a thin layer of graphite lubricant. We tighten each DC using a torque wrench with a force of 40 Nm.

Description and device

Ladovsky lambda probe from BOSCH

For normal operation of the Lada Granta oxygen sensor, the device must have a temperature of at least 300 degrees. For this, an additional thermal component is used, which begins to work immediately after the power unit is started. On Kalina or any other VAZ, the oxygen sensor (OS) can be poisoned as a result of using leaded fuel.

Where is the CD located in a Lada Kalina or any other car? Its installation is carried out in the exhaust manifold, thanks to which the device can constantly monitor the level of oxygen in the exhaust gases during operation of the internal combustion engine. If necessary, the regulator located in the exhaust manifold can send an impulse to the control unit, as a result of which the fuel system begins regulating air and fuel. As you know, a combustible mixture is needed for the full operation of the power unit.

Since high thermal loads are placed on the CD during operation, it is usually made from heat-resistant materials. The surface of the device itself is covered with a special ceramic material, and platinum dusting is applied on top. Accordingly, this allows you to withstand maximum temperatures during engine operation, up to 350 degrees.

As for controlling the oxygen level for the formation of a combustible mixture, a heating component installed inside the structure is responsible for this. As stated above, it comes into operation after the engine starts. If there is a breakdown in the operation of this regulator, this will make it impossible to start the internal combustion engine. To find out exactly where the controller is located, you need to drive the car into an inspection hole and crawl under the bottom. In particular, pay attention to the top of the resonator - it is usually placed there.

Typical faults and solutions

Reasons for reducing the service life of equipment

• Violation of vehicle operating conditions, failure to comply with scheduled technical inspection deadlines;
• Filling the car with low-quality fuel;
• Purchase and subsequent installation of non-original parts;
• Violation of installation technology;
• Defective parts during manufacturing;
• Damage due to an accident, collision, impact;
• Incorrect operation of the firmware of the electronic control unit.

Do-it-yourself diagnostics of the controller on the Lada Granta

To check the equipment we use a multimeter. Most motorists have the device in their garage. The sequence of actions is as follows:

• We place the car above the inspection hole;
• Remove the limit switches;
• Connect the multimeter terminals;
• We activate the device to the “Resistance measurement” position;
• We analyze the received data.

If the arrow tends to infinity, the lambda probe is working; if the arrow drops to zero, the part is damaged. Remember that the controller is non-separable and cannot be prevented.

Note to the driver. Service station mechanics strongly recommend purchasing parts with factory catalog numbers in order to prevent unstable operation of the power unit.

Causes of premature wear of oxygen sensors

• Systematic use of low-octane fuel with the addition of chemical impurities exceeding the limit standards.
• Use of silicone-based sealants in the process of prevention.
• Overheating (boiling) of lambda probes due to incorrectly set ignition angle, excessive enrichment of the combustible mixture, unstable voltage supply in the circuit.
• Repeated engine starts at short intervals. As a result, carbon deposits accumulate in the combustion chamber, since the fuel is not completely burned.
• Diagnostics of spark plugs, cylinder operation with unscrewed spark plugs;
• Contact of chemically aggressive compounds and petroleum products on the tip of the DC.
• Damage to the insulating layer, wiring windings, short to ground.
• Depressurization in the system.

How to check the lambda probe?

Errors P0030 and P0032 during diagnostics may indicate a breakdown of the controller.

The circuit is checked as follows:

• First, the ignition is turned off and the wires are disconnected from the device;
• it is necessary to diagnose contacts X1/C4 for a short circuit; if there is no short circuit, this indicates a controller malfunction;
• then the short circuit on contact D is checked - if there is a short circuit, then the wiring harness needs to be changed, if not, and the error code is P0032, then the CD needs to be changed.

If the diagnostics showed fault code P0030, then you need to act like this:

• the block from the CD should be disconnected, and from the controller - left in place;
• Next, the ignition is activated and the voltage level of contact B is checked;
• if there is no voltage, then the problem must be looked for in the wiring;
• the next step will be to diagnose the resistance level on contacts B and D - if it is less than 1 volt, then the problem lies in a break; if the resistance is more than 1 kOhm, then the CD has failed (author of the video - In Sandro's garage).

Before you check the device at home, you need to consider that diagnostics will require a special tester and pressure gauge.

Therefore, in general, checking the design documentation at home is a rather complex task, but it can be done without equipment:

1. Diagnose the exhaust system for leaks; if there are any, then they need to be eliminated.
2. Conduct a visual diagnosis of the integrity of the device body, wiring, and contacts. Be careful during inspection as these items cannot be repaired.

Diagnostics and checking the serviceability of oxygen sensors on the Lada Grant

In a car service center, diagnostics are carried out using digital scanners, which allows you to read a large amount of data for interpretation. At home, mechanics practice using a multimeter.

So, the operation of the DC is based on the following principle: an input voltage of 0.45V is supplied from the electronic control unit (ECU) to the lambda probe. The specified voltage is sufficient for correct operation. If the sensor malfunctions, the input voltage will differ from the specified standard.

We activate the multimeter, set the required voltage, and check the readings at the output connector.

We also inspect the oxygen sensor heater, it is located in the center of the part. There should be no damage to its surface.

Sometimes owners, instead of the above lambda probes, install fake oxygen sensors. This is not prohibited on the territory of the Russian Federation, but when crossing the border with the EU, the driver will be fined for unauthorized interference with the operation of the exhaust system.

Note to the driver! Craftsmen do not always practice replacing the lambda probe with a new one. If the output voltage does not match, solder a resistor. It pulls the missing voltage to ground and equalizes the reference voltage.

When there is a large amount of oxygen in the exhaust system, the resistance indicator tends to be 0.1 V. When a lack of oxygen is detected, the arrow points to 0.8 V.

• Lean mixture: increase the fuel supply to check the correct operation of the sensor. We clamp the return drain hose. If the error repeats, it means that the DC is faulty and must be replaced with a new one.
• Enriched mixture: to check the DC, remove the vacuum hose; the voltage in the system decreases. The sensor is serviceable, otherwise replace it with a new one.
• We repeat the first and second procedures, if the error does not disappear, then the DC is faulty.

Oxygen sensor

Sensor Features

This often happens: the CD informs the motorist about the presence of a lean mixture in the cylinders; this is one of its features. To solve the problem, first of all, you should increase the supply of gasoline; to do this, you can take a little fuel in a syringe and spray it into the intake manifold. If after this the device sees that the mixture has become richer, this means that the problem is not with it, but with a malfunction of the fuel supply system. It is quite possible that the cause of the problem is damage to the line or incorrect operation of the fuel pump.

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On which cars is this problem most common?

The problem with code P0036 can occur on different machines, but there are always statistics on which brands this error occurs more often. Here is a list of some of them:

• Acura
• Audi (Audi a6)
• BMW (BMW X5, E90, 330i)
• Cadillac
• Chery (Chery Tiggo, Fora)
• Chevrolet (Chevrolet Avalanche, Aveo, Captiva, Cruz, Lacetti, Orlando, Silverado, Trailblazer, Epica)
• Citroen
• Daewoo (Daewoo Matiz)
• Datsun
• Dodge (Dodge Intrepid)
• Ford (Ford Mondeo, Fiesta, Focus, Fusion)
• Honda
• Hyundai (Hyundai Getz, Santa Fe, Solaris, Sonata, Tucson, Elantra, ix35)
• Kia (Kia Optima, Rio, Sid, Sportage, Cerato)
• Lifan
• Mercedes (Mercedes ml350)
• Mini (Mini Cooper)
• Opel (Opel Antara, Astra, Vectra, Zafira, Corsa)
• Peugeot
• Porsche
• Skoda (Skoda Yeti, Octavia, Fabia)
• Suzuki
• Toyota
• Volkswagen (Volkswagen Golf, Jetta, Passat)
• Volvo (Volvo xc90)
• VAZ 2104, 2105, 2107, 2111, 2112, 2114, 2115
• Lada Vesta, Granta, Kalina, Largus, Niva, Priora, X-Ray
• UAZ Bukhanka, Patriot, 39099

With fault code P0036, you can sometimes encounter other errors. The most common are: P0016, P0017, P0030, P0037, P0054, P0056, P0068, P0102, P0135, P0136, P0140, P0141, P0300, P0335, P0341, P0343, P0368, P0444, P0449, P045 5, P0463, P0500, P0505 , P2F00, P2101, P2431.

Source

Review of manufacturers, cost of oxygen sensors

*prices are current as of November 6, 2018.

Video “Diagnosis of Kalina and repair of the lambda probe”

You can learn more about how computer diagnostics of a car and repair of an oxygen sensor are performed in this video (author - Alexander Skripchenko).

In this article I will talk about how to replace the oxygen sensor of a Lada Granta at home. You will learn how to check the lambda probe, as well as how to determine its malfunction yourself.

The Lada Granta has two lambda probes - diagnostic and control. The first is needed in order to monitor the condition and serviceability of the catalytic converter, the second is directly involved in adjusting the stoichiometric composition of the mixture. The diagnostic unit is located behind the catalyst, and the control unit is located at the top of the catalytic converter.

Symptoms of malfunction, as well as methods for checking the oxygen sensor

About oxygen malfunctions, as well as how to check the lambda probe, is written here.

Lambda probe catalog numbers for Grants:

• Control oxygen sensor code - 21074-3850010-00;
• Diagnostic oxygen sensor - 21074-3850010-00.

To replace the lambda probe on a Grant, you need to have only one key for “22”.

Recommendations for the selection of parts and components

For domestic car brands, service station technicians advise purchasing Russian-made parts, since their cost is 10-15% cheaper compared to foreign analogues. At the same time, the workmanship is identical.

Before purchasing, always check the catalog numbers with the actual data specified in the operating instructions for the technical product.

Use the services of certified service stations for prevention, diagnosis and replacement of faulty equipment.

Symptoms of malfunction

The main driver symptom of P0036 is the MIL (Malfunction Indicator Light) illumination. It is also called Check engine or simply “check light”.

They can also appear as:

1. The “Check engine” warning light on the control panel will light up (the code will be stored in the ECM memory as a malfunction).
2. In some cases, the engine control module (ECM) may put the vehicle into limp mode.
3. Sometimes there may be no symptoms despite a stored DTC.

When this code appears, the car can continue to move, but the problem must be corrected as soon as possible. To prevent potential problems such as sensor circuit failure and increased fuel consumption. If the problem is ignored for a long time, unstable operation of the engine is possible, as well as damage to other components.

Reviews

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Tips and tricks

Advice from more experienced craftsmen will never be superfluous for people who are replacing an oxygen sensor with their own hands for the first time. When performing this work, the following difficulties may arise:

• If you are using a Lada Granta with a sixteen-valve engine, then in order to get to the main DC you will need to dismantle the decorative plate covering the exhaust manifold. This element is held on by latches, so removing it will not be difficult.
• Due to operation at elevated temperatures, oxygen sensors may stick to the seat. For this reason, it will take considerable effort to dismantle them. In order to unscrew the parts, you will need to treat the threaded connection with penetrating lubricant.
• To provide freer access to the second sensor, which is located further along the smoke mixture, you can install the machine on an inspection pit or overpass before performing work.

If you take these nuances into account when performing work to replace sensors, then you can carry out all the necessary actions perfectly on the first try.

Conclusion

The service life of a lambda probe directly depends on the quality of the fuel supplied to the car, as well as the frequency of engine starting.

If startup intervals are too short, the fuel does not have time to burn completely. As a result, an excessive amount of carbon deposits forms in the chambers, and the exhaust system of the car becomes clogged (coked up).

Compliance with the manufacturer's recommendations, refueling with high-quality fuel, and a moderate driving style are the main factors that guarantee the long service life of a technical device.

What happens if you ignore signs of trouble?

Naturally, every driver is interested in what the malfunction of the lambda probe affects. Most often, when this part fails, you can observe the following consequences:

1. The car moves unnaturally.
2. Fuel consumption increases significantly.
3. An unpleasant, pungent odor appears from the exhaust pipe.

In modern cars with electronic filling, if the lambda probe breaks down, the emergency lock is immediately activated. This allows you to protect the car from serious damage, even if the driver did not notice any signs of a malfunction. In addition, driving with a broken lambda probe is simply unsafe.

The car behaves too unpredictably. Because of this, an emergency situation on the road may arise, which will endanger not only the life of the driver, but also the lives of other people. That is why it is so important to notice signs of malfunction in time and send the car for service. Moreover, for greater safety it is better to call a tow truck.

In the worst case scenario, the sensor depressurizes. In this case, further movement may lead to engine damage. Restoration will require at least a major overhaul.

When depressurization occurs, exhaust gases enter the intake channel. When braking, the lambda probe begins to detect a huge number of oxygen molecules. As a result, the injection system completely fails.

The main symptom of such a malfunction is loss of power. This is best noticeable at high speeds. At the same time, a mechanical knocking noise under the hood is constantly heard. An unpleasant odor and jerking are also present.

Additional comments for troubleshooting P0036

Many high mileage vehicles (usually over 150,000 kilometers) have short-term problems with sensors, which usually occur when the engine is started or the transmission is subjected to prolonged stress. Often, if the Check Engine Light comes on but the vehicle continues to operate normally, the OBD-II system can be reset and the problem will be resolved. This is why it is important to check for an error code using a scanner and clear the code from the computer's memory before performing any repair work.