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P0751: Shift Solenoid A Performance or Stuck Off

HighPowertrainDIY: Advanced

Can you still drive? Use caution. Certain shifts may be delayed or harsh. Avoid aggressive acceleration and have the vehicle diagnosed soon.

What Does P0751 Mean?

Code P0751 means shift solenoid A is electrically functional but not performing as expected mechanically. The TCM is commanding the solenoid on, but the resulting shift is not occurring correctly. This typically indicates the solenoid valve is stuck in the off position due to contamination, wear, or a hydraulic blockage in the valve body.

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Common Causes

  • Shift solenoid A stuck mechanically
  • Clogged valve body passage
  • Contaminated transmission fluid
  • Worn valve body bore
  • Damaged solenoid spring

Symptoms

  • Check engine light on
  • Delayed or no 1-2 upshift
  • Harsh shift into 2nd gear
  • Transmission slipping between gears
  • Decreased fuel economy

Diagnostic Steps

  1. 1Verify solenoid A electrical resistance is within spec
  2. 2Command solenoid A on and off with scan tool and listen for clicks
  3. 3Check transmission fluid for contamination
  4. 4Drop pan and remove solenoid to inspect for debris
  5. 5Check valve body for worn passages or stuck valves
  6. 6Perform hydraulic circuit test if accessible

Recommended Parts & Tools

Estimated Repair Cost

TypeEstimated Cost
Total Repair Cost Range$150 - $1000

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Get a detailed AI diagnosis for code P0751 specific to your vehicle. Includes step-by-step repair instructions, exact parts needed, and a cost breakdown tailored to your make and model.

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Commonly Affected Vehicles

Ford RangerFord F-150Mazda 3Mazda 6Mercury Mountaineer

Related Recalls

2 Active Recalls 2026 Ford Ranger

The following NHTSA safety recalls have been issued for this vehicle. Contact your dealer to check if your vehicle is affected.

Campaign #25V54100022/08/2025

AIR BAGS:SIDE/WINDOW:CURTAIN

Ford Motor Company (Ford) is recalling certain 2024-2026 Ranger vehicles. The side curtain air bags may contact the B-Pillar inner reinforcements and tear during deployment. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 226, "Ejection Mitigation."

Remedy: Dealers will install protective shields, free of charge. Owner notification letters were mailed September 26, 2025. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25C41.

Campaign #26V10400020/02/2026

ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL

Ford Motor Company (Ford) is recalling certain 2021-2026 F-150, 2022-2026 F-250 SD, F-350 SD, F-450 SD, F-550 SD, Maverick, 2024-2026 Ranger, 2023-2026 F-600 SD, 2022-2027 Lincoln Navigator, Expedition, and 2026 E-Transit vehicles. When towing a trailer, the integrated trailer module (ITRM) may lose communication with the vehicle, possibly causing a loss of brake and turn signal lights, or a loss of brake function. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, " Lamps, Reflective Devices, and Associated Equipment."

Remedy: The integrated trailer module software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. Owner notification letters are expected to be mailed March 17, 2026. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 26C10. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning March 17, 2026.

Data provided by the National Highway Traffic Safety Administration (NHTSA).

Frequently Asked Questions

What is the difference between P0750 and P0751?

P0750 is typically an electrical circuit fault with the solenoid, while P0751 means the solenoid circuit is electrically okay but the solenoid is mechanically stuck or not performing its hydraulic function correctly.

Can a transmission fluid flush fix P0751?

Sometimes. If contaminated fluid is preventing the solenoid from moving freely, fresh fluid may resolve it. However, if the solenoid or valve body is worn, replacement is needed.

Community Fix Reports

Community reports are user-submitted and not verified by Auto AI Buddy. Results may vary.

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