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P0787 Toyota Code - Shift/Timing Solenoid Low

Quick Answer

The P0787 diagnostic trouble code (DTC) for Toyota vehicles indicates a problem with the Shift/Timing Solenoid Low. Common causes include Faulty shift solenoid, Damaged wiring or connectors, Malfunctioning transmission control module (TCM). 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
P0787 Toyota indicates Shift/Timing Solenoid Low.
Common causes
Common causes include Faulty shift solenoid, Damaged wiring or connectors, Malfunctioning transmission control module (TCM).
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 11, 2024
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Code P0787 Toyota Description

The P0787 diagnostic trouble code (DTC) for Toyota vehicles indicates a problem with the Shift/Timing Solenoid Low. This code is typically found in automatic transmissions and signifies that there is an issue with the shift solenoid or its circuit. The shift solenoid is responsible for regulating the flow of transmission fluid to facilitate gear shifts. When it malfunctions or operates at a low level, it can lead to various transmission problems, affecting the vehicle's performance and drivability.

OBDII Code P0787 Toyota - Shift/Timing Solenoid Low
P0787 Toyota Code - Shift/Timing Solenoid Low

Common Causes of P0787 Toyota

  1. Faulty shift solenoid
  2. Damaged wiring or connectors
  3. Malfunctioning transmission control module (TCM)
  4. Low transmission fluid levels
  5. Contaminated transmission fluid

Symptoms of P0787 Toyota

  1. Erratic shifting behavior
  2. Delayed gear engagement
  3. Harsh shifting
  4. Transmission slipping out of gear

How to Fix P0787 Toyota

  1. Begin by diagnosing the specific cause of the P0787 code using a scan tool to identify the faulty component.
  2. Inspect the shift solenoid, wiring, and connectors for any signs of damage or corrosion. Replace any faulty parts as needed.
  3. Check the transmission fluid level and condition. If low or contaminated, drain and refill the transmission fluid according to manufacturer recommendations.
  4. Test the transmission system after repairs to ensure that the issue has been resolved and the code has been cleared.
  5. If the problem persists, further diagnostics may be required to pinpoint the exact cause of the Shift/Timing Solenoid Low error.

Cost to Fix P0787 Toyota

The typical repair costs for addressing a Shift/Timing Solenoid Low issue can vary depending on the specific cause and the extent of the repairs needed. In general, the cost of replacing a shift solenoid or addressing electrical issues can range from $150 to $500, including parts and labor. However, additional costs may apply if other components need to be replaced or if further diagnostics are necessary.

When is the Code Detected?

Code P0787 is detected when the Engine Control Module (ECM) detects short in solenoid valve ST circuit 4 times when solenoid valve ST is operated

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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 P0787 Toyota Code

1. What are the common symptoms of OBDII code P0787 in a Toyota related to the Shift/Timing Solenoid Low?

The common symptoms include harsh shifting, delayed shifting, erratic shifting patterns, and possibly the transmission going into limp mode.

2. What are the typical causes of the OBDII code P0787 Shift/Timing Solenoid Low in a Toyota?

The code P0787 is usually triggered by a faulty shift/timing solenoid, low transmission fluid levels, a clogged transmission filter, or wiring/connectivity issues.

3. Can driving with the OBDII code P0787 Shift/Timing Solenoid Low cause further damage to the vehicle?

Continuing to drive with this code may lead to further transmission issues and potential damage, so it's advisable to address the problem promptly.

4. How can I diagnose the OBDII code P0787 in my Toyota related to the Shift/Timing Solenoid Low?

Diagnosis involves using a scan tool to read the code, checking the transmission fluid level and condition, inspecting the shift/timing solenoid, and testing the wiring connections.

5. Is it safe to continue driving my Toyota with the OBDII code P0787 Shift/Timing Solenoid Low?

It is not recommended to drive the vehicle with this code present, as it can lead to transmission issues and potentially unsafe driving conditions.

6. What are some repair tips for fixing the OBDII code P0787 in a Toyota?

Repair options include replacing the faulty shift/timing solenoid, checking and refilling transmission fluid, replacing the transmission filter, and ensuring all wiring connections are secure.

7. Can a DIY enthusiast fix the OBDII code P0787 Shift/Timing Solenoid Low issue in a Toyota?

Depending on your experience and tools available, some DIY enthusiasts may be able to address this issue by replacing the shift/timing solenoid and performing basic maintenance tasks.

8. How much does it typically cost to repair the OBDII code P0787 related to the Shift/Timing Solenoid Low in a Toyota?

Repair costs can vary depending on the specific issue, but typically range from $200 to $600, including parts and labor.

9. Will resetting the OBDII code P0787 Shift/Timing Solenoid Low make it go away permanently?

Resetting the code may temporarily clear the warning light, but if the underlying issue is not fixed, the code is likely to reappear once the problem is detected again.

10. Is it necessary to visit a dealership for repairs related to the OBDII code P0787 in a Toyota?

While visiting a dealership is an option, independent repair shops and experienced mechanics can also effectively diagnose and repair the OBDII code P0787 related to the Shift/Timing Solenoid Low in a Toyota.

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