When dealing with the Honda P0780 Code, it is important to understand the cause and solution. This code is generated when there is a pressure control valve malfunction, either stuck on or off. The pressure control valve controls the pulley ratio while driving the vehicle. Poor connections, faulty valves, and a faulty transmission can all cause this code. To determine the cause, the car must be conducted between 40-50 mph on a flat road for at least 15 seconds, then stopped and the brake pedal pressed for 5 seconds. However, Knowing the code’s cause is not enough, as the solution must be implemented to get the vehicle running again.
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Causes and Solutions for Honda P0780 Code
| Causes | Solutions |
|---|---|
| Poor connections or loose terminals between the CVT drive pulley pressure control solenoid valve, CVT driven pulley pressure control solenoid valve, and PCM | Check all connections and replace them if necessary. |
| Faulty CVT drive pulley pressure control solenoid valve and CVT driven pulley pressure control solenoid valve | Replace both valves |
| Faulty transmission | Replace transmission |
| Drive a vehicle between 40-50 mph on a flat road for at least 15 seconds, then stop and press the brake pedal for 5 seconds | Check the pulley ratio and determine the cause |
CVT Pressure Control Solenoid Valves
Regarding the Honda P0780 Code, the cause can often be related to the CVT pressure control solenoid valves. These valves control the pulley ratio while the vehicle is being driven. If the connections between these valves and the PCM (powertrain control module) are poor or loose, this can result in the code being generated. All connections must be thoroughly checked and replaced if necessary to fix the issue.
Faulty Valves
Another potential cause of the Honda P0780 Code is faulty valves. If the CVT drive pulley pressure control solenoid valve or the CVT-driven pulley pressure control solenoid valve is wrong, this can cause the code to be generated. For this issue, the faulty valves must be replaced to fix the problem.
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Faulty Transmission
In some cases, a faulty transmission can be the cause of the Honda P0780 Code. If the transmission is defective, it must be replaced to get the vehicle running again.
Testing and Diagnosis
To determine the cause of the Honda P0780 Code, the vehicle must be driven between 40-50 mph on a flat road for at least 15 seconds. After, the brake must be pressed for 5 seconds to check the pulley ratio and accurately determine the cause of the code.
Conclusion
When dealing with the Honda P0780 Code, it is important to understand the cause and solution. Poor connections, faulty valves, and a faulty transmission can all cause this code. To determine the reason, the vehicle must be driven between 40-50 mph on a flat road for at least 15 seconds, then stopped and the brake pedal pressed for 5 seconds. The appropriate solution must then be implemented to get the vehicle running again. The Honda P0780 Code can be difficult to diagnose, but the solutions are relatively straightforward once the cause is determined.
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