P0710 on Ford: How to Diagnose & Fix
Transmission Fluid Temperature Sensor Circuit Malfunction
1 Ford model · 1 documented issue · $50-$400 repair
P0710 on Ford by model: symptoms, diagnosis and fix
E-Series vans use rubber transmission cooler hose sections that connect the steel lines to the radiator-mounted transmission cooler. These rubber sections harden, crack, and leak transmission fluid. The leak is often slow enough that the fluid level drops gradually, causing the transmission to slip before the leak is noticed. The rubber hoses are routed near the exhaust manifold where heat accelerates degradation.
Common Symptoms
- Reddish fluid dripping from radiator area
- Transmission slipping or delayed engagement
- Burning transmission fluid smell
- Low transmission fluid level
- Transmission overheating warning
How to Fix
Replace the rubber transmission cooler line sections with silicone or braided stainless steel upgraded hoses. Use quality hose clamps rated for transmission fluid pressure. Check fluid level after repair and top off with Mercon V (or Mercon LV for 2009+). Install an auxiliary external transmission cooler if the van is used for towing.
Sources for this issue (1)
P0710 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0710 mean on a Ford?
P0710 stands for "Transmission Fluid Temperature Sensor Circuit Malfunction." This transmission code indicates a malfunction in the transmission fluid temperature (TFT) sensor circuit. That sensor tells the computer how hot the transmission fluid is so it can adjust shift timing, torque-converter lockup, and line pressure — and protect the transmission from overheating. The code sets when the temperature signal is implausible, out of range, or the circuit is open or shorted. Because the computer relies on this reading, you may notice harsh or delayed shifts, no torque-converter lockup, or the transmission defaulting to a protective strategy. On Ford it is documented across 1 model: E-Series.
What are the most common causes of P0710?
The most common causes of P0710 are: Faulty transmission fluid temperature sensor, Open, shorted, or corroded sensor wiring, Damaged or loose connector (often internal to the transmission), Low or contaminated transmission fluid, Internal wiring/harness fault inside the transmission, Poor ground or reference circuit, Faulty transmission control module (TCM) — rare. The specific cause varies by vehicle.
How much does it cost to fix P0710 on a Ford?
Published repair estimates on Ford range from $50 to $400 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for P0710 on a different make?
View P0710 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.