[SOLVED] P1784 Code: Fixing L-R Pressure Switch Circuit For Smooth Transmission

The automobile fault code P1784 indicates a problem with the SolenoidPressure Switch Assembly in the transmission. This can cause the Engine Light to turn on or the Service Engine Soon Warning Light to illuminate.

The possible causes include low battery voltage, a faulty SolenoidPressure Switch Assembly, an open or shorted harness, poor electrical connection, or a faulty Transmission Control Module (TCM).

To fix this issue, you should visually inspect the wiring harness and connectors for any damage. Look for broken, bent, pushed out, or corroded pins in the connectors.

The repair time for this issue is estimated to be around 1.0 hour.

It is important to address this problem promptly to prevent further damage to the transmission.

Repair Importance Level10.0 (Out of 10)
Estimated Repair TimeApproximately 1.0 hour
Repair Difficulty Level10.0 (Out of 10)

When the engine light is on or the service engine soon warning light is illuminated, it could be a sign of the p1784 fault code.

  • The symptoms of the automobile fault code P1784 include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.

The automobile fault code P1784 can be caused by low battery voltage, a faulty solenoidpressure switch assembly, an open or shorted harness, a poor electrical connection in the assembly circuit, or a faulty transmission control module (TCM).

  • The fault code P1784 can be caused by: low battery voltage, a faulty solenoid/pressure switch assembly, an open or shorted harness for the solenoid/pressure switch assembly, a poor electrical connection in the solenoid/pressure switch assembly circuit, or a faulty transmission control module (TCM).

To fix the automobile fault code p1784, start by checking the possible causes and visually inspecting the wiring harness and connectors for any damage or corrosion.

  • To fix the automobile fault code p1784, you need to follow these steps: 1.
  • Check the possible causes mentioned above.
  • 2.
  • Visually inspect the wiring harness and connectors related to the fault code.
  • 3.
  • Look for any damaged components.
  • 4.
  • Check for broken, bent, pushed out, or corroded pins in the connectors.
  • The estimated repair time for this fix is 1.0 hour.

The factors influencing the cost of diagnosing and fixing the automobile fault code p1784 are the estimated repair time of 1.0 hour and the typical auto repair shop charges of $75 to $150 per hour.

The P1784 fault code is related to the SolenoidPressure Switch Assembly in the Transmission Control Module (TCM).

This code is triggered when the low-reverse pressure switch is either opened or closed at the wrong time in a specific gear. The code is officially known as P1784 Code – L-R Pressure Switch Circu.

What are the possible causes of the automobile fault code P1784?

If you see the engine light or service engine soon warning light on, the fault code P1784 could be the culprit. This code can be caused by a few different things, including low battery voltage, a faulty solenoid/pressure switch assembly, an open or shorted harness, or a poor electrical connection in the solenoid/pressure switch assembly circuit. It’s important to visually inspect the wiring harness and connectors for any damage, and check for broken, bent, pushed out, or corroded pins in the connectors. Don’t forget to also check the transmission control module (TCM) for any faults.

How can I visually inspect the wiring harness and connectors to fix the P1784 fault code?

If you’re dealing with the P1784 fault code and your engine light is on, it’s time to take action. The cause could be low battery voltage, a faulty solenoid/pressure switch assembly, an open or shorted harness, a poor electrical connection, or a faulty transmission control module (TCM). To fix it, start by visually inspecting the wiring harness and connectors. Look for any damaged components and check for broken, bent, pushed out, or corroded pins on the connectors. Don’t delay, get to the bottom of this issue and get your engine running smoothly again.

What should I look for when checking for damaged components and connector’s pins to resolve the P1784 fault code?

If you’re dealing with the P1784 fault code and your engine light is on, there are a few things you should check. Start by inspecting the wiring harness and connectors related to the solenoid/pressure switch assembly. Look for any damaged components and pay close attention to the connector’s pins – they could be broken, bent, pushed out, or corroded. These issues could be caused by low battery voltage, a faulty solenoid/pressure switch assembly, an open or shorted harness, or a poor electrical connection in the circuit. To resolve the problem, address the possible causes and visually inspect the components and pins.

p1784 error fault code explained

If your engine light is on and you’re experiencing issues with your transmission, it could be due to the P1784 fault code.

This code is typically caused by low battery voltage, a faulty solenoidpressure switch assembly, an open or shorted harness, or a poor electrical connection. To fix the issue, visually inspect the wiring harness and connectors for any damage, and check for broken, bent, pushed out, or corroded pins on the connectors.

Scroll to Top