Engine-CodesGeneric – P0751

P0751 Code - Shift Solenoid 'A' Performance or Stuck Off

Quick Answer

The P0751 diagnostic trouble code (DTC) indicates an issue with the Shift Solenoid 'A' in the transmission system of a vehicle. Common causes include Faulty shift solenoid 'A', Wiring or connector issues related to the solenoid, Low transmission fluid levels or dirty fluid. 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 indicates Shift Solenoid 'A' Performance or Stuck Off.
Common causes
Common causes include Faulty shift solenoid 'A', Wiring or connector issues related to the solenoid, Low transmission fluid levels or dirty fluid.
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.
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code P0751 Description

The P0751 diagnostic trouble code (DTC) indicates an issue with the Shift Solenoid 'A' in the transmission system of a vehicle. The shift solenoid is responsible for controlling the flow of transmission fluid to engage the appropriate gear for smooth shifting. When this solenoid is not performing correctly or is stuck in the off position, it can lead to various transmission problems, affecting the vehicle's overall performance.

OBDII Code P0751 - Shift Solenoid 'A' Performance or Stuck Off
P0751 Code - Shift Solenoid 'A' Performance or Stuck Off

Common Causes of P0751

  1. Faulty shift solenoid 'A'
  2. Wiring or connector issues related to the solenoid
  3. Low transmission fluid levels or dirty fluid
  4. Malfunctioning transmission control module (TCM)
  5. Internal mechanical issues within the transmission

Symptoms of P0751

  1. Harsh or delayed shifting
  2. Erratic shifting patterns
  3. Transmission slipping
  4. Transmission not shifting at all

How to Fix P0751

  1. Begin by checking the transmission fluid level and condition. If low or dirty, perform a transmission fluid flush and refill.
  2. Inspect the wiring and connectors related to the shift solenoid 'A' for any damage or corrosion. Repair or replace as necessary.
  3. Test the shift solenoid 'A' using a multimeter to check for proper resistance and functionality. Replace the solenoid if it fails the test.
  4. If the solenoid is functioning correctly, but the issue persists, inspect the TCM for any faults or errors. Reset or replace the TCM if needed.
  5. Clear the DTC from the vehicle's computer using a diagnostic scanner and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0751

The cost of repairing a Shift Solenoid 'A' performance or stuck off issue can vary depending on the make and model of the vehicle, as well as the specific components that need to be replaced. On average, the parts for this repair can range from $100 to $300, while labor costs can range from $150 to $300. Overall, the total repair cost can be anywhere from $250 to $600. It's important to note that these are rough estimates, and actual costs may vary based on the factors mentioned earlier. It's recommended to consult with a trusted mechanic or auto repair shop for a more accurate cost estimate.

Tech Notes for P0751

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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Need Help with the Code?

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Code P0751 Information for Specific Makes

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 Code

What does the OBDII code P0751 mean?

P0751 indicates a performance issue or a stuck-off condition in the shift solenoid 'A' of the transmission, affecting shifting behavior.

What are common symptoms of the P0751 code?

Common symptoms include harsh or delayed shifting, slipping transmission, check engine light illumination, and potential loss of power during acceleration.

What causes the P0751 code to trigger?

Causes can include a faulty shift solenoid 'A', low transmission fluid levels, wiring issues, or problems with the transmission control module.

How can I diagnose a P0751 code?

To diagnose P0751, check the transmission fluid level and condition, inspect wiring and connectors for damage, and test the shift solenoid with a multimeter.

What are some potential repairs for the P0751 code?

Repairs may involve replacing the shift solenoid 'A', fixing or replacing damaged wiring, and ensuring the transmission fluid is at the proper level and in good condition.

Can I drive my vehicle with a P0751 code?

While you may be able to drive the vehicle, it is not recommended as it can lead to further transmission damage and can affect safety and drivability.

How do I clear the P0751 code from the ECU?

The code can be cleared using an OBDII scanner after repairs have been made, or by disconnecting the vehicle's battery for a short period.

Will changing the transmission fluid fix the P0751 code?

Changing the transmission fluid may help if the fluid is old or contaminated, but it will not resolve the issue if the shift solenoid is faulty.

How much does it typically cost to repair the P0751 code?

Repair costs can vary widely, typically ranging from $100 to $600, depending on whether you need a simple fluid change or a solenoid replacement.

Discuss the causes and fixes for P0751 OBDII Code

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