AutoCodes – Generic – P084D

P084D Code - Transmission Fluid Pressure Sensor/Switch 'H' Circuit High

Quick Answer

The Transmission Control Module (TCM) monitors the Transmission Fluid Pressure Sensor/Switch signal. Common causes include Faulty Transmission Fluid Pressure Sensor/Switch 'H', Transmission Fluid Pressure Sensor/Switch 'H' harness is open or shorted, Transmission Fluid Pressure Sensor/Switch 'H' circuit poor electrical connection. 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: P084D indicates Transmission Fluid Pressure Sensor/Switch 'H' Circuit High.
Common causes: Common causes include Faulty Transmission Fluid Pressure Sensor/Switch 'H', Transmission Fluid Pressure Sensor/Switch 'H' harness is open or shorted, Transmission Fluid Pressure Sensor/Switch 'H' circuit poor electrical connection.
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 2,484

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 May 10, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P084D Description

The Transmission Control Module (TCM) monitors the Transmission Fluid Pressure Sensor/Switch signal. The TCM sets the OBDII code when the Transmission Fluid Pressure Sensor/Switch is not to factory specifications.

OBDII Code P084D - Transmission Fluid Pressure Sensor/Switch 'H' Circuit High - AutoCodes.com — P084D Code - Transmission Fluid Pressure Sensor/Switch 'H' Circuit High

What does this mean?

What are the Possible Causes of the DTC P084D?

Faulty Transmission Fluid Pressure Sensor/Switch 'H'
Transmission Fluid Pressure Sensor/Switch 'H' harness is open or shorted
Transmission Fluid Pressure Sensor/Switch 'H' circuit poor electrical connection

How to Fix the DTC P084D?

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 P084D 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.

Need more information about the P084D code?

Need more information on how to fix the P084D code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P084D 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 P084D Code

1. What are common symptoms of OBDII code P084D?

- Common symptoms include harsh shifting, transmission slipping, decreased fuel efficiency, and illuminated Check Engine Light.

2. What causes OBDII code P084D to trigger?

- This code is typically triggered by a malfunction in the transmission fluid pressure sensor/switch 'H' circuit, which may be caused by electrical issues, sensor failure, or circuit abnormalities.

3. How serious is OBDII code P084D?

- This code should be addressed promptly as it can lead to transmission performance issues and potential damage if left unresolved.

4. How can I diagnose OBDII code P084D?

- Diagnosing this code usually involves using a scan tool to read the code, checking transmission fluid levels and condition, and inspecting the wiring and connectors related to the pressure sensor/switch.

5. Can I drive my vehicle with OBDII code P084D?

- It is not recommended to drive the vehicle with this code present, as it can lead to further damage to the transmission.

6. What is the typical repair for OBDII code P084D?

- The typical repair involves replacing the transmission fluid pressure sensor/switch 'H', addressing any wiring or connector issues, and clearing the trouble code.

7. How much does it cost to fix OBDII code P084D?

- The cost of fixing this code can vary depending on the extent of the issue, but it may range from $200 to $500 or more, including parts and labor.

8. Can a DIY enthusiast fix OBDII code P084D?

- While some DIY enthusiasts with experience in automotive repair may be able to address this code, it is recommended to consult a professional technician due to the complexity of transmission systems.

9. Is there a way to prevent OBDII code P084D from occurring?

- Regular maintenance of the transmission system, including fluid changes and inspections, can help prevent issues that may trigger this code.

10. Will OBDII code P084D reset on its own?

- The code may clear on its own after several successful drive cycles if the underlying issue has been resolved; however, it is best to diagnose and fix the problem to prevent reoccurrence.