AutoCodes – Dodge – P1784 Dodge

P1784 Dodge Code - L-R Pressure Switch Circuit

Quick Answer

The Transmission Control Module (TCM) monitors the Solenoid/Pressure Switch Assembly. Common causes include Low battery voltage, Faulty Solenoid/Pressure Switch Assembly, Solenoid/Pressure Switch Assembly harness is open or shorted. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P1784 Dodge indicates L-R Pressure Switch Circuit.
Common causes: Common causes include Low battery voltage, Faulty Solenoid/Pressure Switch Assembly, Solenoid/Pressure Switch Assembly harness is open or shorted.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 2,271

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Feb 10, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1784 Dodge Description

The Transmission Control Module (TCM) monitors the Solenoid/Pressure Switch Assembly. The Diagnostic Trouble Code (DTC) P1784 will set if low-reverse pressure switch is opened or closed at the incorrect time in a given gear.

OBDII Code P1784 Dodge - L-R Pressure Switch Circuit - AutoCodes.com — P1784 Dodge Code - L-R Pressure Switch Circuit

What does this mean?

What are the Possible Causes of the DTC P1784 Dodge?

Low battery voltage
Faulty Solenoid/Pressure Switch Assembly
Solenoid/Pressure Switch Assembly harness is open or shorted
Solenoid/Pressure Switch Assembly circuit poor electrical connection
Faulty Transmission Control Module (TCM)

How to Fix the DTC P1784 Dodge?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1784 Dodge code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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Need more information on how to fix the P1784 Dodge code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1784 Dodge code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1784 Dodge Code

1. What are common symptoms of the OBDII code P1784 in a Dodge related to the L-R Pressure Switch Circuit?

The common symptoms include harsh shifting, transmission slipping, and an illuminated check engine light.

2. What are possible causes of the P1784 code indicating issues with the L-R Pressure Switch Circuit in a Dodge?

Possible causes include a faulty pressure switch, low transmission fluid levels, a malfunctioning transmission control module (TCM), or wiring issues.

3. How can I diagnose the P1784 code in my Dodge related to the L-R Pressure Switch Circuit?

Diagnose the code by conducting a visual inspection of the wiring, testing the pressure switch for continuity, checking transmission fluid levels, and using a scan tool to gather diagnostic information.

4. What are the repair options for the P1784 code in a Dodge associated with the L-R Pressure Switch Circuit?

Repair options may include replacing the faulty pressure switch, addressing any wiring issues, ensuring proper transmission fluid levels, or replacing the TCM if necessary.

5. Can I continue driving my Dodge with the P1784 code related to the L-R Pressure Switch Circuit?

It is not recommended to continue driving with the P1784 code as it can lead to further damage to the transmission. It is advisable to address the issue promptly.

6. Will resetting the trouble codes make the P1784 code related to the L-R Pressure Switch Circuit disappear?

Resetting the trouble codes may temporarily remove the check engine light, but if the underlying issue causing the P1784 code is not addressed, the code is likely to reappear.

7. How much does it typically cost to repair the P1784 code in a Dodge concerning the L-R Pressure Switch Circuit?

The cost of repairing the P1784 code can vary depending on the specific issue, but it may range from $200 to $600 or more, including parts and labor.

8. Are there any preventive maintenance tips to avoid the P1784 code in a Dodge related to the L-R Pressure Switch Circuit?

Regularly checking and maintaining proper transmission fluid levels, addressing any leaks promptly, and conducting routine inspections can help prevent issues leading to the P1784 code.

9. Can a DIY enthusiast with basic automotive knowledge repair the P1784 code in a Dodge linked to the L-R Pressure Switch Circuit?

While some DIY enthusiasts may be able to diagnose and repair simple issues causing the P1784 code, more complex problems may require professional expertise to ensure proper resolution.

10. How long does it take to repair the P1784 code in a Dodge associated with the L-R Pressure Switch Circuit?

The repair time for the P1784 code can vary depending on the specific cause of the issue and the expertise of the technician, but it may take anywhere from a few hours to a full day.