P0751: Shift Solenoid A Performance/Stuck Off
What Does P0751 Mean?
P0751 is a diagnostic trouble code indicating: Shift Solenoid A Performance/Stuck Off. This code relates to the transmission system. It has been reported in NHTSA complaints across 3 different vehicle models.
The automatic transmission is controlled by the TCM using input from speed sensors, temperature sensors, and pressure sensors. When the TCM detects a fault, it may activate limp mode (2nd or 3rd gear only). Shift solenoids are electromagnetic valves inside the valve body controlling hydraulic fluid flow. Modern transmissions use 4-8 solenoids in combination for each gear. Solenoid failures are often caused by contaminated fluid — worn clutch material and degraded fluid create varnish that sticks solenoids. Always check transmission fluid first: level, color (red/pink good, brown/black bad), and smell (burnt = internal damage). Transmission DTCs escalate fast — a $200 solenoid fix can become a $3000-$5000 rebuild if ignored.
Symptoms of P0751
- ⚠️ Check engine/transmission warning light on
- ⚠️ Harsh, delayed, or erratic shifting
- ⚠️ Transmission stuck in one gear (limp mode)
- ⚠️ No upshift or no downshift
- ⚠️ Transmission slipping
- ⚠️ RPM flares between shifts
Common Causes
- 🔍 Faulty shift solenoid
- 🔍 Contaminated transmission fluid
- 🔍 Wiring issue between TCM and solenoid
- 🔍 Valve body wear
- 🔍 TCM internal failure
P0751 Reports by Year
Real Owner Reports
From NHTSA complaint database — actual owner descriptions.
"MY CHECK ENGINE LIGHT HAS COME ON. AS WELL AS THE LIGHTS STATING THE VEHICLE STABILITY CONTROL AND TRACTION CONTROL SYSTEMS HAVE BEEN DISABLED. THE TRANSMISSION WILL NOT SHIFT OUT OF THIRD GEAR AND THE VSC BEING OFF IS CAUSING AN UNSAFE DRIVING CONDITION DUE TO SLIPPING TIRES AROUND CORNERS AT NORMA"
— Toyota Tundra owner, 01/27/2017
"March 9, 2022 I was driving my Ford Escape (Titanium AWD 2.0 eco boost 83083 miles )on hwy 20 in Niceville Fl. Without warning the vehicle stop acceleration at 45mile per hour. As I stopped applying pressure to the throttle the vehicle rpms continued to over rev on their own but the vehicle was not"
— Ford Escape owner, 03/09/2022
"I WAS DRIVING AS I DO 5 NIGHTS A WEEK TO WORK. TRAVELING ABOUT 55MPH WHEN SUDDENLY, MY GTI EQUIPPED WITH A DSG TRANSMISSION DOWNSHIFTED TO WHAT I BELIEVE WAS 1ST GEAR. THE REVS SUDDENLY WERE VERY HIGH. THE VEHICLES SPEED SEEMED TO DRASTICALLY LOWER TO 20MPH. I WAS ALMOST HIT BY MULTIPLE CARS BEHIND "
— Volkswagen Gti owner, 07/04/2014
Source: NHTSA Complaints Database
Most Reported Vehicles for P0751
Based on NHTSA owner complaint data.
| # | Vehicle | Reports |
|---|---|---|
| 1 | TOYOTA TUNDRA | |
| 2 | FORD ESCAPE | |
| 3 | VOLKSWAGEN GTI |
Diagnostic Tips
- Check fluid level and condition FIRST
- Multiple codes suggest valve body or internal damage
- Monitor solenoid duty cycle with scan tool
- Solenoids often accessible by removing pan
Common Mistakes to Avoid
- ❌ Replacing solenoid without flushing contaminated fluid
- ❌ Using aftermarket fluid instead of manufacturer-specified
- ❌ Driving in limp mode for extended periods
Frequently Asked Questions
What is a shift solenoid?
Can I drive in limp mode?
How much for solenoid replacement?
Can fluid change fix it?
What To Do Next
Possible Fixes
- 🔧 Replace shift solenoid or pack
- 🔧 Transmission fluid flush with manufacturer fluid
- 🔧 Repair wiring to transmission
- 🔧 Replace valve body
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1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
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2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
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Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.