What is the connection between transmission issues and a P0748 code?

The transmission isn’t working right. When I put it in drive, it feels like it’s starting in 3rd gear. I have to shift to 1st, but it acts like it’s in 2nd. Moving to Drive makes it work properly. The check engine light came on with a P0748 code. I changed the transmission fluid and filter, and replaced two sensors, but the problem persists. Now, it also has trouble finding reverse after shifting from Drive. Do you have any suggestions on what to try next, or should I consider getting a new transmission? It has 150,000 miles on it.

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A P0748 code means there’s a problem with the transmission which can be caused by a bad pressure control solenoid, or a dirty transmission filter or fluid. These issues prevent the transmission from controlling pressure correctly, which triggers the P0748 code.

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The P0748 code is about the Pressure Control Solenoid ‘A’ in your transmission. It usually means there’s an electrical problem with the solenoid, which can cause transmission issues.

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Thank you @Camila for the nice question. Have also learnt something from the feedbacks given :heart_eyes: :heart_eyes: :heart_eyes:

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So, how can one fix this Jeep error code P0748?

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@Charlotte, Here’s how to fix the error code P0748 problem:

  1. Check Transmission Fluid: Make sure the transmission fluid is at the right level and is clean. Low or dirty fluid can cause issues with the solenoid.
  2. Inspect Wiring and Connectors: Look at the wires and connectors for the solenoid to see if they’re damaged, corroded, or loose.
  3. Test the Solenoid: Use a multimeter to check the solenoid’s resistance and compare it to the manufacturer’s specs. If it’s not working right, replace it.
  4. Replace the Solenoid: If the solenoid is faulty, get a new one that matches your Jeep’s part number and install it.
  5. Clear the Code: After fixing everything, use an OBD-II scanner to clear the error code. Then, test drive the vehicle to make sure the issue is fixed.

A P0748 code indicates an issue with the pressure control solenoid “A” in the transmission. This solenoid controls the fluid pressure in the transmission, and problems with it can cause shifting issues, slipping, or a complete transmission failure.

A P0748 code indicates an issue with the pressure control solenoid in your transmission. This solenoid regulates fluid pressure for proper gear shifting. Problems with it can cause transmission issues like erratic shifting or slipping.