AutoCodes – Generic – P0934

P0934 Code - Hydraulic Pressure Sensor Circuit Low

Quick Answer

Line pressure is electronically controlled by the Transmission Control System (TCM) and is measured by the Line Pressure Sensor (LPS). Common causes include Faulty Hydraulic Pressure Sensor, Hydraulic Pressure Sensor harness is open or shorted, Hydraulic Pressure Sensor 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: P0934 indicates Hydraulic Pressure Sensor Circuit Low.
Common causes: Common causes include Faulty Hydraulic Pressure Sensor, Hydraulic Pressure Sensor harness is open or shorted, Hydraulic Pressure Sensor 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 28,065

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 11, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0934 Description

Line pressure is electronically controlled by the Transmission Control System (TCM) and is measured by the Line Pressure Sensor (LPS). The desired line pressure is continuously being compared to the actual line pressure and is regulated by electronically changing the duty cycle of the Pressure Control Solenoid (PCS). The Transmission Control System calculates the desired line pressure based on inputs from the transmission and engine. A calculated torque input to the transmission is used as the primary input to the desired line pressure calculation and is called Torque Based Line Pressure. The Transmission Control Module (TCM) monitors the Hydraulic Pressure Sensor. The TCM sets the OBDII code when the Hydraulic Pressure Sensor is not to factory specifications.

OBDII Code P0934 - Hydraulic Pressure Sensor Circuit Low - AutoCodes.com — P0934 Code - Hydraulic Pressure Sensor Circuit Low

What does this mean?

What are the Possible Causes of the DTC P0934?

Faulty Hydraulic Pressure Sensor
Hydraulic Pressure Sensor harness is open or shorted
Hydraulic Pressure Sensor circuit poor electrical connection

How to Fix the DTC P0934?

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 P0934 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 P0934 code?

Need more information on how to fix the P0934 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0934 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P0934 Dodge — Hydraulic Pressure Sensor Circuit Low

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 P0934 Code

1. What are common symptoms of OBDII code P0934 (Hydraulic Pressure Sensor Circuit Low)?

- Common symptoms include hard shifting, transmission slipping, and illuminated warning lights on the dashboard.

2. What are possible causes of OBDII code P0934?

- Possible causes include a faulty hydraulic pressure sensor, damaged wiring or connectors in the sensor circuit, low transmission fluid levels, or a malfunctioning transmission control module.

3. How can I diagnose the cause of OBDII code P0934?

- To diagnose the issue, you can use a scan tool to retrieve the specific trouble codes, inspect the hydraulic pressure sensor and its wiring for any visible damage, and check the transmission fluid level and condition.

4. Can I continue driving with OBDII code P0934 present?

- It is not recommended to continue driving with this code present, as it can lead to further damage to the transmission and potentially unsafe driving conditions.

5. How can I repair OBDII code P0934?

- Repair options may include replacing the hydraulic pressure sensor, repairing or replacing damaged wiring or connectors, ensuring proper transmission fluid levels, and resetting the trouble codes with a scan tool.

6. Is it safe to clear the OBDII code P0934 without addressing the underlying issue?

- Clearing the code without addressing the underlying issue is not recommended, as the problem may persist and potentially cause more severe transmission issues in the future.

7. Can a DIY enthusiast fix OBDII code P0934 at home?

- Depending on the severity of the issue, some DIY enthusiasts may be able to address the problem at home by following repair guides and using appropriate tools. However, complex transmission issues may require professional assistance.

8. How much does it typically cost to repair OBDII code P0934 at a mechanic or dealership?

- The cost of repairing OBDII code P0934 can vary depending on the specific cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

9. Are there any preventative maintenance tips to avoid OBDII code P0934 in the future?

- Regularly checking and maintaining proper transmission fluid levels, promptly addressing any transmission issues or warning signs, and following the manufacturer's recommended service schedule can help prevent OBDII code P0934 from occurring.

10. Can extreme weather conditions affect the likelihood of OBDII code P0934 occurring?

- Extreme weather conditions, such as extreme cold or heat, can potentially affect the performance of the transmission and its components, increasing the likelihood of issues like OBDII code P0934.