P1745 Code: What Causes Hydraulic Pressure to Increase So Much?<\/h2>\n\n\n\n
P1745 stands for irregular pressure within the transmission line. As we all know, a TCM (transmission control module) is designed to balance out the actual pressure of the transmission line.<\/p>\n\n\n\n
In simple terms, the difference between the real and ideal pressure shouldn\u2019t exceed more than 10 psi (ideally). <\/p>\n\n\n\n
Not attending to the issue can slowly lead to harsh shifts, high fuel temperature, inability to change gears while driving, and so on. <\/p>\n\n\n\n
For now, let\u2019s see what causes the increase in transmission line pressure of your jeep.<\/p>\n\n\n\n
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- A faulty pressure control solenoid<\/a><\/strong><\/li>\n\n\n\n
- Insufficient supply of current to the TCM<\/strong><\/li>\n\n\n\n
- Harness\/loop open in the solenoid<\/strong><\/li>\n\n\n\n
- Clogged Transmission line<\/strong><\/li>\n<\/ul>\n\n\n\n
Read Also:<\/strong> How to Troubleshoot & Fix P0522 Jeep DTC Code? (Detailed Guide)<\/a><\/p>\n\n\n\n
How to Troubleshoot & Fix P1745 Jeep DTC Code?<\/h2>\n\n\n\n
Luckily, troubleshooting the P1745 code is not that difficult. You don\u2019t have to replace the whole transmission anymore. <\/p>\n\n\n\n
Here are five easy methods you can try the next time your jeep shows a P1745 code.<\/p>\n\n\n\n
1. Maintain the Fluid Quality & Level<\/h3>\n\n\n\n
Start by checking the fluid inside the oil pan. The transmission fluid color tells you a lot about its inner condition. For example, a thick black consistency is a red flag. <\/p>\n\n\n\n
It means that apart from the pressure regulator, the transmission is having trouble with a clogged filter as well. <\/p>\n\n\n\n
As a result, the fluid running across the engine is full of debris, causing numerous types of issues, including misfires.<\/p>\n\n\n\n
So, make sure you clean up the filter properly. If you find the filter in a good condition, it might be the fluid itself. <\/p>\n\n\n\n
Low-quality fluid tends to decompose pretty fast. It\u2019s your call to switch to a high-quality one.<\/p>\n\n\n\n
Read Also:<\/strong> How to Troubleshoot & Fix P0480 Jeep DTC Code? (Detailed Guide)<\/a><\/p>\n\n\n\n
2. Check the Electrical Connection<\/h3>\n\n\n\n
Sometimes, changing the fluid type and filter would do the trick. But if it\u2019s not enough, the next step is to suspect a bad electrical connection.<\/p>\n\n\n\n
Even the external parts of the transmission, like the connector pins, and wires, can lead to such errors. <\/p>\n\n\n\n
It mostly happens due to corroded or broken electrical parts. What it does is mess up the electricity supply required for a gear change. <\/p>\n\n\n\n
You might already know; change in electricity supply increases or decreases the line pressure of any transmission. <\/p>\n\n\n\n
As you push the gear, you are doing nothing but sending that current supply that impacts the line pressure.<\/p>\n\n\n\n
Here is a list of required PCS current supplies for a certain amount of line pressure.<\/p>\n\n\n\n
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As you can see, the wrong supply of power can easily lead to a high or low-pressure level inside the transmission line. <\/p>\n\n\n\n
What you need to do is, clean up the corrosion\/rust and make those pins work efficiently again. White vinegar works great for dissolving corrosion. <\/p>\n\n\n\n
If they are broken or have dents, you have no other option but to replace them with a new set. <\/p>\n\n\n\n
Of course, it\u2019s possible to carry out the task by yourself. But it can be hard to find the right one. <\/p>\n\n\n\n
If you don\u2019t want to take chances, we suggest you stick with a professional mechanic. It shouldn\u2019t cost more than $50 to $100, excluding the cost of new equipment.<\/p>\n\n\n\n
Read Also:<\/strong> How to Troubleshoot and Fix Jeep B2204-00 DTC Code?<\/a><\/p>\n\n\n\n
3. Replace the Solenoid<\/h3>\n\n\n\n
After you have gone through the first two methods, it\u2019s time to replace the pressure regulator completely.<\/p>\n\n\n\n
It is the most straightforward method. Some people prefer to go for it on the first attempt. <\/p>\n\n\n\n
However, since it\u2019s a little costly and tedious, see whether you can fix the issue with the previous methods. <\/p>\n\n\n\n
Now, coming to the point, you would need a professional toolkit with all the right gears for replacing the solenoid.<\/p>\n\n\n\n
Empty out the transmission fluid using a funnel. Next, loosen up the transmission pan with a 10-millimeter socket. <\/p>\n\n\n\n
You will see the PCS after a quick scan. Remove them and place the new ones carefully.<\/p>\n\n\n\n
There you go! The problem should be fixed by now. But keep in mind to match the current vehicle\u2019s PCS specification while buying. <\/p>\n\n\n\n
However, making such a change requires a thorough inspection. So, make sure you are using a proper OBD-2<\/a> scanner before anything.<\/p>\n\n\n\n
- Insufficient supply of current to the TCM<\/strong><\/li>\n\n\n\n