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Engine-Codes – Honda – P0751 Honda

P0751 Honda Code - Shift Solenoid 'A' Stuck Off

Quick Answer

The P0751 code for Honda vehicles indicates that the Shift Solenoid 'A' is stuck off. Common causes include Faulty shift solenoid 'A', Damaged or corroded wiring harness or connections, Clogged transmission fluid passage. 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
P0751 Honda indicates Shift Solenoid 'A' Stuck Off.
Common causes
Common causes include Faulty shift solenoid 'A', Damaged or corroded wiring harness or connections, Clogged transmission fluid passage.
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 P0751 Honda Description

The P0751 code for Honda vehicles indicates that the Shift Solenoid 'A' is stuck off. The shift solenoid is a crucial component of the transmission system, responsible for controlling the flow of transmission fluid to engage the appropriate gear for the vehicle's speed and load. When the shift solenoid 'A' is stuck off, it means that it is not functioning correctly, leading to issues with gear shifting and overall transmission performance.

OBDII Code P0751 Honda - Shift Solenoid 'A' Stuck Off
P0751 Honda Code - Shift Solenoid 'A' Stuck Off

Common Causes of P0751 Honda

  1. Faulty shift solenoid 'A'
  2. Damaged or corroded wiring harness or connections
  3. Clogged transmission fluid passage
  4. Low transmission fluid levels
  5. Mechanical issues with the solenoid valve

Symptoms of P0751 Honda

  1. Erratic or delayed shifting between gears
  2. Harsh shifting or jerking motions when shifting
  3. Inability to shift gears
  4. Reduced fuel efficiency
  5. Illumination of the Check Engine Light

How to Fix P0751 Honda

  1. Diagnose the issue by using a scan tool to confirm the P0751 code and inspect the shift solenoid 'A' and related components.
  2. Replace the faulty shift solenoid 'A' if necessary, ensuring proper installation and secure connections.
  3. Check and clean the wiring harness and connections to ensure proper electrical connectivity.
  4. Inspect the transmission fluid levels and quality, topping up or replacing fluid as needed.
  5. Test drive the vehicle to confirm that the issue has been resolved and reset the Check Engine Light if necessary.

Cost to Fix P0751 Honda

The typical repair costs for addressing a P0751 code in a Honda vehicle can vary depending on the specific model, the extent of the issue, and the labor rates at the auto repair shop. On average, the cost of replacing a shift solenoid 'A' and addressing related issues can range from $200 to $500, including parts and labor. It's important to consider that additional diagnostics and repairs may be needed, so it's advisable to consult with a professional mechanic for a more accurate cost estimate. Keep in mind that labor rates can vary widely, with hourly rates typically ranging between $80 and $150, depending on the location and type of repair facility.

What does this mean?

Tech Notes for P0751 Honda

When the transmission solenoid is stuck off, in most cases the problem is not the electrical part of the solenoid; the problem is foreign material obstructing the mechanical function of the solenoid or the flow of the fluid through the transmission valve body. If the transmission fluid is very dirty, it is recommended to change the transmission fluid and if possible, remove the transmission pan for further diagnosis. Excessive debris or metal particles on the transmission pan could be an indication that there is a transmission mechanical failure, and that the transmission will need to be rebuilt or replaced.











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When is the Code Detected?

The P0751 code is detected when the gear required by the ECM does not match the actual gear when vehicle is driven.

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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 P0751 Honda Code

1. What are the common symptoms of OBDII code P0751 in a Honda, indicating Shift Solenoid 'A' Stuck Off?

- Common symptoms include delayed or harsh shifting, failure to shift gears, and the transmission staying in one gear.

2. What causes the Shift Solenoid 'A' Stuck Off code (P0751) in a Honda?

- The code is often triggered by a faulty shift solenoid 'A', low transmission fluid levels, a clogged transmission filter, or wiring issues.

3. How can I diagnose the Shift Solenoid 'A' issue in my Honda if I get the OBDII code P0751?

- A professional diagnostic scan tool can be used to monitor the shift solenoid 'A' operation and test its electrical components for proper functioning.

4. Can I continue driving my Honda with the P0751 OBDII code indicating Shift Solenoid 'A' Stuck Off?

- It is not recommended to continue driving with this code as it can lead to further transmission damage and potential safety hazards.

5. What are some tips for repairing the Shift Solenoid 'A' issue in a Honda with code P0751?

- Repair options may include replacing the faulty shift solenoid 'A', checking and topping up transmission fluid, inspecting the transmission filter, and repairing any damaged wiring.

6. How much does it typically cost to repair the Shift Solenoid 'A' problem causing the P0751 code in a Honda?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from $150 to $500 for parts and labor.

7. Are there any preventive maintenance measures to avoid encountering the P0751 code in a Honda?

- Regular transmission fluid checks and changes, along with timely maintenance of the transmission system, can help prevent issues leading to the P0751 code.

8. Will resetting the OBDII code P0751 temporarily resolve the Shift Solenoid 'A' problem in a Honda?

- Resetting the code may temporarily clear the warning light, but it will not fix the underlying issue causing the Shift Solenoid 'A' malfunction.

9. Can a DIY enthusiast with basic mechanical skills repair the Shift Solenoid 'A' issue causing the P0751 code in a Honda?

- While some may attempt the repair themselves, it is recommended to consult a professional mechanic with experience in transmission repairs to ensure proper diagnosis and resolution.

10. How long does it take to repair the Shift Solenoid 'A' Stuck Off issue in a Honda with code P0751?

- The repair time can vary depending on the complexity of the issue and the availability of parts, but it may take a few hours to a full day to fix the problem.

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