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Engine-Codes – Subaru – P0719 Subaru

P0719 Subaru Code - Torque Converter Brake Switch B Circuit Low

Quick Answer

The P0719 diagnostic trouble code (DTC) for Subaru vehicles specifically refers to the Torque Converter Brake Switch B Circuit Low. Common causes include Faulty torque converter brake switch, Damaged or corroded wiring/connectors in the circuit, Malfunctioning PCM. 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
P0719 Subaru indicates Torque Converter Brake Switch B Circuit Low.
Common causes
Common causes include Faulty torque converter brake switch, Damaged or corroded wiring/connectors in the circuit, Malfunctioning PCM.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code P0719 Subaru Description

The P0719 diagnostic trouble code (DTC) for Subaru vehicles specifically refers to the Torque Converter Brake Switch B Circuit Low. This code indicates an issue with the torque converter brake switch circuit, which is responsible for controlling the engagement and disengagement of the torque converter lock-up clutch. The torque converter lock-up clutch is an essential component in automatic transmissions that helps improve fuel efficiency and reduce heat generated by the torque converter.

OBDII Code P0719 Subaru - Torque Converter Brake Switch B Circuit Low
P0719 Subaru Code - Torque Converter Brake Switch B Circuit Low

Common Causes of P0719 Subaru

  1. Faulty torque converter brake switch
  2. Damaged or corroded wiring/connectors in the circuit
  3. Malfunctioning PCM
  4. Electrical issues such as short circuits or open circuits

Symptoms of P0719 Subaru

  1. Harsh shifting between gears
  2. Decreased fuel efficiency
  3. Transmission overheating
  4. Reduced acceleration
  5. Stalling or hesitation when accelerating

How to Fix P0719 Subaru

  1. Perform a diagnostic scan to retrieve the trouble codes and identify the exact cause of the issue.
  2. Inspect the torque converter brake switch for proper operation and replace if necessary.
  3. Check the wiring and connectors for any damage or corrosion, repairing or replacing as needed.
  4. Test the PCM for faults and reprogram or replace if required.
  5. Clear the DTCs, reset the PCM, and perform a test drive to ensure the issue has been resolved.

Cost to Fix P0719 Subaru

The cost of repairing a P0719 code for a Subaru can vary depending on the exact cause of the issue and the labor rates in your area. On average, you can expect to pay anywhere from $150 to $500 for parts and labor. Keep in mind that diagnostic time and labor rates can vary between auto repair shops, so it's advisable to obtain quotes from multiple sources to ensure you get the best deal. Additionally, rates may be higher at dealerships or in metropolitan areas, while independent shops may offer more competitive pricing.

When is the Code Detected?

Vehicle speed over 35 MPH and down to 0 MPH 5 times-No change in brake switch input detected

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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 P0719 Subaru Code

1. What are the common symptoms of OBDII code P0719 in a Subaru related to the Torque Converter Brake Switch B Circuit Low?

- Common symptoms include issues with shifting gears, engine stalling, poor fuel efficiency, and in some cases, the vehicle may not start.

2. What are the possible causes of OBDII code P0719 in a Subaru related to the Torque Converter Brake Switch B Circuit Low?

- The code may be triggered by a faulty torque converter brake switch, damaged wiring or connectors in the circuit, or a failing transmission control module.

3. How can I diagnose OBDII code P0719 in a Subaru related to the Torque Converter Brake Switch B Circuit Low?

- A thorough inspection of the torque converter brake switch, circuit connections, and the transmission control module is recommended. Using a diagnostic scanner to retrieve additional trouble codes can also provide valuable information.

4. Can I drive my Subaru with OBDII code P0719 related to the Torque Converter Brake Switch B Circuit Low?

- It is not advisable to continue driving the vehicle with this code present, as it can lead to further transmission issues and potential safety hazards. Seek professional help to diagnose and repair the problem promptly.

5. How can I repair OBDII code P0719 in a Subaru related to the Torque Converter Brake Switch B Circuit Low?

- Depending on the root cause, repairs may involve replacing the torque converter brake switch, repairing damaged wiring or connectors, or reprogramming the transmission control module. Professional assistance is recommended for accurate diagnosis and repair.

6. Will resetting the OBDII code P0719 related to the Torque Converter Brake Switch B Circuit Low make it go away permanently?

- Resetting the code may temporarily clear the dashboard warning light, but if the underlying issue is not addressed, the code is likely to reappear. It is crucial to diagnose and fix the root cause to prevent future problems.

7. How much does it typically cost to repair OBDII code P0719 in a Subaru related to the Torque Converter Brake Switch B Circuit Low?

- Repair costs can vary depending on the specific cause of the code, parts needed, and labor rates. It is advisable to obtain estimates from reputable automotive repair shops or dealerships.

8. Can a DIY enthusiast fix OBDII code P0719 related to the Torque Converter Brake Switch B Circuit Low in a Subaru?

- While some skilled DIY enthusiasts may be able to address this issue, it is recommended to seek professional help due to the complexity of transmission systems and the importance of proper diagnosis and repair.

9. How long does it typically take to repair OBDII code P0719 in a Subaru related to the Torque Converter Brake Switch B Circuit Low?

- The repair time can vary based on the specific cause of the code and the availability of parts. In general, it may take a few hours to a full day to diagnose and repair the issue.

10. Can OBDII code P0719 related to the Torque Converter Brake Switch B Circuit Low affect the overall performance of my Subaru?

- Yes, this code can impact the transmission's operation and lead to drivability issues such as harsh shifting, reduced fuel efficiency, and potential damage to the transmission components if left unresolved. It is important to address the problem promptly.

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