What does Toyota car fault code B1801 mean?

Toyota Motors. Fault code B1801 means:"Short circuit in the driver-side detonator circuit"。If there is no problem with the airbag system, it may be that the spiral cable is broken.

Airbag. The indicator indicates to the driver the condition of the system. The indicator is controlled by the Airbag System Control Module (ACM), commonly known as the Airbag Control Computer. When the ignition key is ignited, the ignition and start signals are received by the ACM module.

When the ignition switch is turned on (hit to the ON position), the airbag indicator should flash 7 9 times, and then remain stable during engine starting. Once the engine starts, the airbag indicator flashes 7 9 times and then remains out during engine operation.

Any of the following indicator conditions indicate a faulty airbag system:

1. If the ignition switch is turned on, the light will continue to glow without flashing.

2. If the ignition switch is turned on, the light will continue to glow after flashing 7 to 9 times.

3. If the light is on when the engine is running.

4) If the lights don't come on at any time.

5. If the lamp cannot shine stably during the engine starting.

In any of the above cases, the driver should have the airbag system inspected because it may not work. When the airbag system is put into diagnostic mode, the indicator light will flash a fault**. It should be noted that some airbag systems have continuous lights for about 5s after the ignition switch is turned on and the engine starts.

The fault code B1801 means that the driver-side detonator circuit is short-circuited.

Hello! It is recommended to go to the 4S shop to match the fault code, I wish you a happy car, if my reply can help you, please help choose it, thank you very much!

Toyota HighlanderThe meaning of fault code B1811 is a driver-side detonation device 2-stage circuitOpen the wayThe fault belongs to the fault of the main and auxiliary airbags (only the main and auxiliary airbags have a two-stage circuit) system.

The handling of the fault is mainly from the following aspects of inspection and maintenance:

1. Whether the airbag coil is damaged.

2. Whether the plug of the airbag assembly is firmly inserted.

3. Steering wheel.

Whether the spiral cable (hairspring) underneath is damaged.

Toyota Highlander airbag shows the presence of an open circuit in the second step of the circuit means:

If there is no collision of the vehicle, the plug under the airbag can be loosened due to the general open circuit situation, or the connection harness is faulty. If there is a problem with the car airbag, the computer can be connected to the airbag system to further check the fault, if the airbag is normal, the computer will automatically clear the fault, and repair it according to the fault display problem if there is a fault.

If the problem is not resolved, it is recommended to visit a repair shop to have the airbag system thoroughly inspected. Airbag.

It's not something that can be used forever as long as it doesn't explode, which is also the meaning of the existence of the macro airbag indicator.

Toyota has faulty "C1201", mostly due toThree-way catalysis, throttle, and ABS sensor lead. If in the drive, to 2500 rpm, the car is destroyed and there are signs of loosening, indicatedSpark plugsIf there is a problem, the spark plug should be replaced.

Precautions: Jeep has faulty "C1201", most of which are affected by three-way catalysis and throttle.

Therefore, different models have C1201 fault codes, which represent different meanings of cherry teasing. However, as long as there is this fault code, it means that the engine is faulty, and you must go to the 4S shop to find a professional for careful investigation.

Although there are many types of vehicles, the structure is similar. This should be said to be the credit of standardization, but also the need for large-scale production lines. With the development of the Society, the progress of science and technology and the change of demand, the shape of railway vehicles has begun to change, especially the passenger cars are no longer the same old faces.

However, their basic structure has not changed significantly, but the specific parts have a more scientific and advanced structural design.

How to clear the fault code of Toyota Crown B1421 and B1424?

B1421, skin digging B1424 is the solar sensor circuit fault, its setting condition is set when the light is dark to a certain extent, the solar sensor is installed on the instrument panel under the front windshield, mainly composed of photodiodes, its function is to detect the sunshine intensity, and the voltage signal it transmits is used to control automatic air conditioning and automatic lights. Use a small incandescent lamp to illuminate the solar sensor, B1421, B1424 fault code can be burned back and dissipated, turn the light switch to Auto, turn off the small incandescent lamp, the headlamp is lit; When the small incandescent lamp is turned on, the headlamp turns off. It can be seen that B1421 and B1424 are caused by insufficient light in the workshop.