Aisin transmission problems

In this brief guide, we are going to provide you with the common Aisin transmission problems and what are the solutions to these problems.

Aisin Transmissions are made by Aisin AW and they are the largest producer of automatic transmissions in the world. Aisin AW supplies to 55 automotive companies, from Ford and Nissan to MINI and Volvo. However, there are many problems with Aisin transmissions and we’ll tell you how you can solve them.

What are the common problems with Aisin transmissions?

Most of the common problems with Aisin transmission are:

  • Transmission control system malfunction
  • Output Speed Sensor malfunction
  • Incorrect gear ratio
  • Torque converter malfunction
  • Shift solenoid malfunction

Why is transmission control system malfunction a problem with Aisin transmissions?

The transmission control system malfunction indicates a possible problem that has been relayed from the transmission to the Powertrain Control Unit. It simply means that something went wrong in the electrical system that controls the Aisin transmission.

What signs are shown by this Aisin transmission problem?

P0700 is the code that will be shown if there is a transmission control system malfunction with the Aisin transmissions. This is a generic code which you will get using OBD-II for your transmission.

What is the solution to this Aisin transmission problem?

Clear all the error codes and see if it comes back by using the diagnostic tool. Check transmission fluid level and also its condition. If both of these options don’t work then go to your trusted mechanic.

Why is transmission fluid temperature sensor malfunction a problem with Aisin transmissions?

The transmission fluid temperature sensor is meant to monitor the transmission fluid temperature and if there is something wrong with it then either the transmission will overheat or your check engine light will turn on.

What signs are shown by this Aisin transmission problem?

P0710 is the code that will be shown if there is a transmission fluid temperature sensor malfunction with the Aisin transmissions. This is a generic code which you will get using OBD-II for your transmission.

What is the solution to this Aisin transmission problem?

Replace the transmission fluid temperature sensor. If this doesn’t work then change the transmission fluid. If both of these options don’t work then check and repair transmission fluid leaks

Why is output speed sensor malfunction a problem with Aisin transmissions?

This sensor is connected to the output shaft speed sensor and it is used by the ECU to monitor the speed/RPM of the transmission output shaft. If there is a malfunction with this sensor then there could be a drivability or the vehicle could go into limp mode. 

What signs are shown by this Aisin transmission problem?

P0720 is the code that will be shown if there is an output speed sensor malfunction with the Aisin transmissions. This is a generic code which you will get using OBD-II for your transmission.

What is the solution to this Aisin transmission problem?

Replace output speed sensor and the input speed sensor. If these both options do not work out then Repair or replace damaged wiring or connectors with the system.

Why is incorrect gear ratio a problem with Aisin transmissions?

If the Aisin transmission is with an incorrect gear ratio then it can cause anything from shift solenoid problems to transmission fluid problems. 

What signs are shown by this Aisin transmission problem?

P0730 is the code that will be shown if there is an incorrect gear ratio with the Aisin transmissions. This is a generic code which you will get using OBD-II for your transmission.

What is the solution to this Aisin transmission problem?

Wires connecting sensors to the transmission control module and other electrical connections should be inspected and any damaged or corroded wires in and near the transmission control module should be repaired or replaced to fix this issue.

Why is torque converter malfunction a problem with Aisin transmissions?

Drivability issues are sure to follow if there is a torque converter malfunction with the Aisin transmission. Situated between the transmission and the engine, the torque converter works to equalize the speed by multiplying the torque in order to optimize vehicle performance

What signs are shown by this Aisin transmission problem?

P0740 is the code that will be shown if there is a torque converter malfunction with the Aisin transmissions. This is a generic code which you will get using OBD-II for your transmission.

What is the solution to this Aisin transmission problem?

Common solutions include performing an overhaul of the transmission, powertrain control module replacement and replacing or adding transmission filter and fluid. 

Why is shift solenoid malfunction a problem with Aisin transmissions?

Shift solenoid malfunction means there is a problem with the gear shifting. An Aisin transmission changes gear by directing pressurized transmission fluid to move clutches and bands around. The computer controls all of this with little spring loaded devices called solenoids. 

What signs are shown by this Aisin transmission problem?

P0750 is the code that will be shown if there is a shift solenoid malfunction with the Aisin transmissions. This is a generic code which you will get using OBD-II for your transmission.

What is the solution to this Aisin transmission problem?

Some common solutions are changing the transmission fluid and filter or replacing faulty solenoids. Also you can repair or replace a faulty transmission pump.

How to diagnose these common problems with Aisin transmission precisely?

If you are an experienced driver then you can use common diagnostic tools such as OBD-II immediately and fix those errors. For others, the only way to precisely diagnose these signs is to visit your local mechanic or service station who will have a more accurate diagnostic tool to check these signs. 

How to prevent getting these signs in the first place?

Regular maintenance is an easy way to extend the life of your transmission. Failing to have your transmission serviced on time, will result in catastrophic wear to internal components, which include the solenoids. 

It is possible to flush the transmission and clear blocked hydraulic passages. However, this may only be a temporary fix if damage has already been done to the valve body, clutches or seals.

FAQs: Aisin transmission problems

Is the Aisin transmission any good?

RevMax, a reputable transmission rebuilder, said, ” It was built with extremely low quality internal parts and its capacity to handle increased power in stock form is extremely low.

Who makes the Aisin transmission?

Aisin automatic transmissions are built by Aisin Seiki and Aisin AW. Toyota Motor Corporation and Aisin Seiki are shareholders of Aisin VW.

Conclusion

In this brief guide, we have provided you with the common Aisin transmission problems and what are the solutions to these problems. 

If you have any questions or comments please let us know.

Citations:

https://spacecoastdaily.com/2019/11/most-common-issues-with-Aisin-transmission/

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