What is the fault of BMW Mini R55 fault code 913

1) Check whether the engine is obviously overheating, and if so, find out the cause first. (There are many related causes of engine overheating, pay attention to analysis). (2) Check whether the engine knocks due to the failure of the ignition system.

If the ignition advance angle is too large, the mixture will burn too fast, resulting in engine knock combustion. The reasons for the excessive ignition advance angle are as follows: the crankshaft position sensor is installed in the wrong position (or loose), the timing belt is installed in the wrong tooth, the operation program of the power control module is faulty, the air intake detected by the air flow sensor is too small, and the detonation sensor is slow to respond.

3) Check if the pressure in the fuel system is too low. If the pressure of the fuel system is too low, causing the mixture to be too thin, the combustion rate of the mixture will decrease, and the heat transferred through the cylinder wall to the coolant after the mixture is burned will increase, resulting in a high engine temperature. The engine temperature is too high, which is prone to detonation and combustion.

4) Check if the fuel is contaminated. The lower the designation (i.e., octane number) of gasoline, the less resistant the gasoline is to knock off, and the more susceptible the engine is to detonation combustion when using this gasoline as fuel. In addition, if impurities are added to the gasoline with a relatively high grade, it will also cause the anti-knock ability of the gasoline to decrease.

5) Check whether the engine knocks due to the failure of the engine cooling system. The actual working temperature of the engine is determined by the heat generated by the combustion of the mixture per unit time and the heat emitted by the heat dissipation system, if the cooling system is faulty, the former will be greater than the latter, the temperature of the engine will be higher and higher, and the tendency to detonation and combustion will be greater and greater. (6) Check whether the pressure of the cylinder is too large.

If the pressure of the cylinder is too high, the combustion rate of the mixture increases, and the likelihood of detonation combustion in the engine increases. The reason for the excessive pressure of the cylinder is that the cylinder head, piston or cylinder gasket model is not the same as the working volume of the cylinder and the cylinder pressure. (7) Check whether there is too much carbon in the combustion chamber of the engine.

If a large amount of carbon deposits accumulate in the cylinder, the hot spots formed by the carbon deposits may ignite the mixture in advance during the cylinder compression process, causing the pressure in the cylinder to suddenly increase during further compression, resulting in detonation and combustion. The causes of carbon deposition are as follows: the mixture is too concentrated, the ignition energy is relatively poor, the quality of gasoline is relatively poor, and the engine burns oil for some reason, etc., which can be checked separately.

8) Check if the EGR system is working properly. If the exhaust gas recirculation system works within the working range, the system fails and cannot make the exhaust gas enter the cylinder to participate in the combustion, which will inevitably cause the combustion temperature of the mixture to rise, so that the engine will overheat and be prone to detonation combustion. (9) Check whether the application and calorific value range of the spark plug are correct.

For such troubles, it is recommended that you go to a repair shop or 4S shop for help.

What is engine super knocking.

Engine "super knocking", also known as low-speed premature ignition, is an abnormal combustion phenomenon unique to supercharged direct-injection gasoline engines. When the engine inhales the mixture of fuel vapor and air, in the process of compression, due to the mixture of low ignition point substances in the fuel, it will cause the gas mixture to automatically deflagrate before the ignition of the spark plug, forming a new ignition point, and the flame spreads outward at a speed several times higher than the normal combustion, so that the cylinder wall is affected and vibrates, which is called detonation. To put it simply, knocking is a manifestation of abnormal pressure in the combustion chamber caused by abnormal combustion.

A phenomenon when detonation occurs.

The engine will emit a crisp and discontinuous metal knocking sound when a slight knock occurs, while a continuous metal knocking sound will occur when the engine will have a continuous metal knocking sound during a severe and continuous knock, and the engine power will also be significantly reduced.

What are the causes of detonation?

1 The air-fuel ratio is incorrect, and the mixture is too dilute to increase the combustion temperature, thereby increasing the engine temperature.

2. The octane number of fuel is too low, the octane number is an indicator of anti-detonation, the higher the octane number, the stronger the anti-detonation, and the lower the conversely, it is easy to detonation.

3. The cleanliness of the fuel is insufficient, and some physical substances and chemical impurities contained in the fuel, including some aromatic substances, will cause spontaneous combustion and detonation during the compression process of the engine.

4. Excessive carbon deposition in the combustion chamber, due to the serious carbon deposition, the actual volume of the cylinder becomes smaller, the compression ratio increases, and at the same time, the carbon deposition in the high-temperature environment will always burn red due to the poor heat dissipation ability, so that the high-temperature compressed mixture is not only ignited by the sequential spark plug, but also randomly ignited by the high-temperature carbon deposition in the cylinder, resulting in detonation.

5. The engine temperature is too high, the engine is too hot in the environment, the inlet air temperature is too high, or the engine cooling water circulation is poor, which will cause the engine to detonate at high temperature.

6 The ignition angle is too early, so that the piston can gain power as soon as it enters the power stroke after the compression stroke is completed, it is usually ignited before the piston reaches the top dead center. Ignition too early will cause most of the oil and gas to burn when the piston is still compressing the stroke, and the unburned oil and gas will be subjected to great pressure and spontaneous combustion, resulting in detonation.

The methods to solve detonation are as follows.

1. Use fuel that conforms to the compression ratio of the engine.

2. Avoid "drag gear" driving.

3. Regularly clean the carbon deposits and fuel injectors in the oil circuit.

4. Avoid high temperatures: check the coolant water level regularly, check and change the engine oil regularly, avoid long-term intense driving, and monitor the water temperature frequently when driving in summer.

5. Appropriate selection of high-quality fuel additives. For example, fuel additives containing PNF stock solution can solve the problem of engine knocking to a certain extent.

It is an exhaust failure and needs to go to a 4S shop.

Repair. View engine dynamics data streams.

It was found that the variable timing adjustment of the intake and exhaust air has been put into emergency mode, i.e., when the engine is started, the intake camshaft.

In the most delayed limit position, the exhaust camshaft is pre-tensioned and held in the most advanced position by means of a spring when the engine is started.

After trying to clear the fault and restart the engine, it was found that the fault disappeared temporarily, and the fault appeared after the in-situ acceleration experiment, and the fault code was still there. Although both the sensor and the vanos solenoid valve are new, it is prudent to measure the waveform of the sensor.

Summary. Hello. Friend.

Engine electrical board failure.

Solution: You can first check the ignition coil, distributor, ignition control module, engine speed sensor, crankshaft position (CKP) sensor, and circuit, connector, etc. If the problem cannot be solved, it is recommended to replace the wire between the integrated power supply module and the engine computer, and the wire between the engine computer and the oxygen sensor wire, and there can be no short circuit, if there is no short circuit, you can directly choose to replace the integrated function module, if the fault can not be solved, replace the engine board.

Check out your friends, I hope it can help you.

BMW 535LI fault code 1b5202

Hello. Friend BMW 535LI fault code 1B5202: engine electrical board failure.

Solution: You can first check the ignition coil, distributor, ignition control module, engine speed sensor, crankshaft position (CKP) sensor, and circuit, gear bending joint, etc. If the line mold can not solve the problem, it is recommended to replace the wire between the integrated power supply module and the engine computer, and the wire between the engine computer to the oxygen sensor wire, there can be no short circuit, if there is no short circuit, you can directly choose to replace the integrated function module, if the fault can not be solved, replace the engine electric board.

Check out your friends, I hope it can help you.

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Everything else is normal.

Good. It takes time to type by hand, wait a minute, friend, thank you.

Hello. Friend BMW 535Li power bus end K115N1 short circuit closure to ground handling method: you need to check whether there is a problem with the line, that is, whether there is a problem with the line from the CAS module to the integrated power supply module, if there is no problem, it is a problem with the CAS module, which leads to the fierce attention of the car.

The CAS module needs to be replaced. Hope it helps.

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Is there an insurance from CAS to the power supply module?

No. Friend.

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So how to check this line.

CAS to the power supply module's line? Friend.

Hello. Friend check method: check from the ECU, 1. Bifurcation within the ECU, that is, the internal power supply module of the ECU corresponds to the external pins of the ECU with multiple stoves; 2. ECU external bifurcation, that is, the ECU internal power supply module corresponds to an ECU external pin concealment, and then bifurcation is carried out through the external wiring harness.

Hope it helps.

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Ask about custom messages].

Summary. There are two BMW fault codes reported 2a5b. The first is the heating failure of the oxygen sensor before the exhaust gas catalyst, and the second is the failure of the eccentric sensor of the electronic valve system.

The former fault is to replace the front oxygen sensor, and the latter fault is to measure whether there is a virtual short circuit in the wiring harness between the eccentric shaft sensor and the engine computer, if not, if the eccentric shaft sensor is not directly replaced.

Hello, happy to answer your questions.

Hello. There are two BMW fault codes reported 2a5b. The first is the heating failure of the oxygen sensor before the gas catalyst of the waste bucket, and the second is the failure of the eccentric sensor of the electronic rock valve system.

The former fault is to replace the front oxygen sensor, and the latter fault is to measure whether there is a virtual short circuit in the line elimination beam between the eccentric shaft sensor and the engine computer, if there is no direct replacement of the eccentric shaft sensor.

This fault occurred and the engine was unable to lock up.

This fault code can affect engine weakness, usually due to damage to the sensor itself. However, before replacing the sensor, it is necessary to measure whether there is a virtual connection or short circuit in the middle of the sensing device to the engine computer, and if there is no disadvantage, replace the sensor.

Summary. Hello dear, this is a line fault caused by a power failure, The BMW shift switch consists of an electronic control module and a shift lever, and the electronic control module integrates a sensor that detects the position of the shift lever and a locking part that unintentionally shifts. The sensor to detect the position of the shift lever is generally a Hall sensor, and there are sensors in the horizontal and longitudinal directions for sensing, and the shift switch obtains the position of the shift lever by virtue of the sensor, and the position signal is sent to the transmission control system through the PT-CAN bus.

Hello dear, BMW 5 Series reported 420531 fault code should check whether the gearbox plug is water. Yes, the beam refers to whether the virtual connection of the oak is slow. If there is no problem, you should change the speed which hail box computer.

Hello, 13 BMW 5 Series.

Can't hang up the gear. Last night, I suddenly couldn't hang any other gear.

Washed the engine before.

Hello dear, this is a line fault caused by a power failure, rotten BMW shift switch is composed of an electronic control module and a shift lever, and the Qin Jian electronic control module integrates a sensor that detects the position of the shift lever and a lock part that suspects that the pants unintentionally shift. The sensor to detect the position of the shift lever is generally a Hall sensor, and there are sensors in the horizontal and longitudinal directions for sensing, and the shift switch obtains the position of the shift lever by virtue of the sensor, and the position signal is sent to the transmission control system through the PT-CAN bus.

BMW 5 Series Xianshi clearly indicates that the transmission system failure is not available, and the transmission mechanical and electronic control installation or nuclear jujube placement failure is relatively large, and the transmission system failure refers to the failure of the engine or gearbox, and the gearbox can be geared if the engine fails.

Automatically pop back when changing hands.

Hello dear, if the lack of sales is when the car has just started, this problem is still understandable, if it still appears after a period of time, there may be some problems with the logic of the gearbox, you need to go to the 4S shop to do some checks.

420531 final stage power supply: short circuit to ground.

Hello dear, 20531 final power supply: a short circuit to ground is a damp circuit.

Summary. Hello, nice to meet you. I'm Xiaomo, an auto repair consultant.

With 15 years of experience in automobile maintenance, he is currently working in FAW-Volkswagen, one of the world's top 500 state-owned enterprises, with a senior certificate for automobile maintenance and a certificate for auto beauty technicians, and is familiar with the detailed configuration of major brands of vehicles, and has provided comprehensive automobile repair and maintenance consulting for tens of thousands of customers.

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BMW Mini Fault Code P0015

Hello, nice to meet you. I'm Xiaomo, an auto repair consultant. With 15 years of experience in automobile maintenance, he is currently working in FAW-Volkswagen, one of the world's top 500 state-owned enterprises, with a senior certificate for automobile maintenance and a certificate for auto beauty technicians, and is familiar with the detailed configuration of major brands of vehicles, and has provided comprehensive automobile repair and maintenance consulting for tens of thousands of customers.

We are typing the answer by hand, so please be patient for a while. I will provide you with a solution in a few minutes of cong milling, thanks! ❤️

Hello BMW Mini Fault Code: P0015 Details are as follows: Fault Belongs to System Scope: Fuel, Air or Emission Control Applicable Models: All Car Manufacturers This situation is a fuel code difference and it is necessary to check the vehicle combustion mold oil shielding system.

My car gears, bars, and tensioners have been replaced.

You're a fuel failure.

**Not good. There was a malfunction in the car's internal fuel system.

The fuel system is generally composed of a fuel pump, a fuel filter, a fuel injector, etc.

Isn't the p0015 a timing fault.

Your B camshaft position actuator has no fault codes.

No, it's P0015

The cold car starts and fires the gun.

The exhaust car trapped liquid gas pipe discharge is the first sound of the unburned combustible mixture re-burning in the exhaust pipe, and it is often accompanied by sparks, which is commonly known as the closed object exhaust pipe discharge ruler.

You are the cannon caused by the overconcentration of the mixture in the oil circuit system.

The oil circuit system needs to be cleaned.

It feels like it's too late to ignite.

Because the mixture is not burned completely, it will affect the ignition efficiency.