P0722: Output Shaft Speed Sensor Circuit No Signal
What Does P0722 Mean?
P0722 is a diagnostic trouble code indicating: Output Shaft Speed Sensor Circuit No Signal. This code relates to the transmission system. It has been reported in NHTSA complaints across 6 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 P0722
- ⚠️ 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
P0722 Reports by Year
Real Owner Reports
From NHTSA complaint database — actual owner descriptions.
"Speedometer went down to zero going 55mph. Car thought it was going 0 MPH, which causes transmission to go into first gear . Car reved awfully and had almost caused an accident both times this has happened to me. scanned the codes and it gives me p0722, common problem with these exact year mustangs "
— Ford Mustang owner, 02/16/2022
"The 2013 Mustang (with 67,071 miles) transmission (6R80) downshifted to 1st gear at highway speeds exactly like the F-150 recall and would also shift out of gear. It could have been catastrophic, but was able to keep control of the vehicle. Was able to get the car home and only drove it to the deale"
— Ford Mustang owner, 07/27/2023
"WAS DRIVING MY 2013 MUSTANG HOME FROM MY PARENTS HOUSE THE CAR DIDN'T WANT TO SHIFT OR MOVE EVEN AT FULL THROTTLE STOP IN THE MIDDLE OF THE ROAD SHUT THE VEHICLE OFF AND RESTARTED IT DROVE HOME JUST FINE. WENT TO DRIVE IT LATER THAT NIGHT AND AGAIN CAR DIDN'T WANT TO SHIFT NOR MOVE BUT THIS TIME I L"
— Ford Mustang owner, 11/22/2017
Source: NHTSA Complaints Database
Most Reported Vehicles for P0722
Based on NHTSA owner complaint data.
| # | Vehicle | Reports |
|---|---|---|
| 1 | FORD EDGE | |
| 2 | FORD MUSTANG | |
| 3 | DODGE CALIBER | |
| 4 | FORD EXPEDITION | |
| 5 | CHEVROLET MALIBU | |
| 6 | HYUNDAI ELANTRA |
P0722 Reports by Vehicle
Detailed NHTSA complaint analysis for each vehicle model.
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?
Reported Repair Costs for P0722
Based on 3 owner-reported repair costs from NHTSA complaints.
⚠️ These are owner-reported costs, not estimates. Actual costs vary by location, labor rates, and root cause. Source: NHTSA complaints database.
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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3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.