Diagnostic Trouble Code (DTC): P0751 Shift Solenoid A Performance or Stuck Off/1-2 Shift Solenoid Valve Performance

Our certified mechanics come to you · Get a fair and transparent estimate upfront


Cost of diagnosing the Diagnostic code

Diagnostic is a diagnostic trouble code (DTC) for "Trouble Code (DTC) P0751 Shift Solenoid A Performance or Stuck Off/1-2 Shift Solenoid Valve Performance". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $114.99 . Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.0 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford $114.99 $20.0
Toyota $114.99 $20.0
BMW $124.99 $20.0
SCHEDULE Diagnostic DIAGNOSTIC Get a fair and transparent estimate upfront

P0751 code definition

The P0751 code indicates that the car’s computer has noted a malfunction or incorrect operation with shift solenoid A.

What the P0751 code means

Automatic transmissions use solenoids to move fluid through interior channels and create the pressure needed to change gears. The P0751 code means that there has been a problem with shift solenoid A, as opposed to shift solenoid B, which would be indicated with a P0755 code. If the computer detects a difference in the actual gear ratio as compared to the gear ratio predicted by the engine speed, throttle position and other factors, it will set the P0751 code.

What causes the P0751 code?

As with the P0755 code, there are multiple potential causes for the P0751 code. These include the following:

  • Faulty shift solenoid A
  • Internal blockages in the transmission preventing fluid from flowing
  • Low transmission fluid
  • Dirty or contaminated transmission fluid
  • Internal mechanical transmission failure
  • Failed PCM (rare)
  • Failed TCM (rare)

What are the symptoms of the P0751 code?

The symptoms of the P0751 code mirror those of the P0755 code, and include the following:

  • No discernible symptoms
  • Transmission slipping
  • Harsh shifting
  • Transmission overheating
  • Reduced fuel efficiency
  • Check Engine light on
  • Inability to shift into or out of gear
  • Transmission stuck in “limp-home” mode

How does a mechanic diagnose the P0751 code?

Diagnosing the cause of the P0751 code begins by connecting an OBD II scanner to the car’s communication port. The mechanic will read all the codes stored in the computer and then clear them. A test drive is necessary to make sure the code resets.

Next, the mechanic should check the transmission fluid level. If it is low, it will need to be topped off and the car test driven again. If the fluid is burned or contains finings or other contamination, an inspection of the fluid in the pan will be required, and it may indicate the need for a transmission rebuild.

If the problem is not fluid related, the mechanic will need to inspect the shift solenoid wiring harness, connections and circuit for damage or corrosion. If the problem does not lie in these areas, the shift solenoid itself will need to be tested.

Common mistakes when diagnosing the P0751 code

Most commonly, mechanics will replace shift solenoid A without conducting a full diagnosis. While a failed solenoid is often the culprit, there are other factors that must be ruled out. Often, low transmission fluid is the problem.

How serious is the P0751 code?

The P0751 code is very serious, as it can affect the drivability of your car and can lead to serious transmission damage and high replacement costs if not handled promptly. Have the problem diagnosed as soon as possible.

What repairs can fix the P0751 code?

Repairing the P0751 code may require a number of different fixes depending on the actual underlying problem. They include:

  • Topping off the transmission fluid
  • Draining and refilling the transmission fluid
  • Replacing shift solenoid A
  • Repairing or replacing the wiring harness
  • Cleaning corrosion from connections

Additional comments for consideration regarding the P0751 code

Determining an accurate diagnosis for the P0751 code can require a significant amount of testing and inspection. However, it is essential that a mechanic not simply replace shift solenoid A immediately, as this can lead to an expensive repair that does not solve the problem. A full diagnosis must be provided, including inspecting the wiring harness and connections.

Need help with a P0751 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

Check Engine Light
trouble codes
P0751

No more waiting rooms! Our mechanics will come to you to diagnose and fix the Diagnostic code.

SCHEDULE Diagnostic DIAGNOSTIC
Get a $20 credit for the follow-up repair

Recent Check Engine Light is on Inspection reviews

Excellent Rating

(7400)

Rating Summary
6879
249
58
41
173
6879
249
58
41
173
 at YourMechanic

David

13 years of experience
393 reviews
David
13 years of experience
Chevrolet Malibu L4-2.4L - Check Engine Light is on Inspection - Marietta, Georgia
He explained everything to me in detail on what I needed to know about my car. Definitely recommend him for getting the job done.
 at YourMechanic

Raymond

37 years of experience
402 reviews
Raymond
37 years of experience
Toyota Camry L4-2.2L - Check Engine Light is on - Las Vegas, Nevada
Raymond did a great job however I was charged for two hours labor and he was only here less than 45 minutes. should I expect this on future appointments with your mechanic ?
 at YourMechanic

Shane

17 years of experience
217 reviews
Shane
17 years of experience
Volkswagen EuroVan V6-2.8L - Check Engine Light is on Inspection - Austin, Texas
Arrived on time. Explained the issues he found and how he will fix it. I have parts on order and will schedule an appointment to have Shane install the parts when they arrive.
 at YourMechanic

Kanstantsin

19 years of experience
51 reviews
Kanstantsin
19 years of experience
Ford F-150 V8-4.6L - Check Engine Light is on Inspection - Littleton, Colorado
Kanstantsin arrived early. Was very courteous and professional. Will highly recommend to anyone. Thank you Kanstantsin.


More related articles

Related questions

P0302 (rear rotor misfire) and CEL not going away
Hey there. Your engine is misfiring but not until your engine is at high RPMs. The cause can be that you are not getting enough fuel or spark to the cylinder. You should have the engine cleaned of carbon, clean...
Car not running
It sounds like you have at least two issues, the check engine light has come on accompanied by loss of power and you have an antifreeze leak. The source of antifreeze leaks can be pinpointed by simple pressure testing of...
Runs rough & Engine light
The codes being set should be investigated first unless they implicate systems or components that clearly are irrelevant as "causes" of a rough running condition in which case you would diagnose and fix the rough running condition first and then...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com