P0868 on Lincoln: How to Diagnose & Fix
Transmission Fluid Pressure Low
1 Lincoln model · 1 documented issue · 1 critical
P0868 on Lincoln by model: symptoms, diagnosis and fix
On a small number of 2019–2020 Nautilus SUVs, the transmission start-stop accumulator end cap may have two bolts missing or not tightened to specification. That can cause a transmission fluid leak and may progress to loss of transmission function; a fluid leak near an ignition source may increase the risk of fire. A wrench light may come on. Applies to: 9 2019–2020 Lincoln Nautilus with the eight-speed automatic transmission (filed with NHTSA under the program name "2019-2020 Lincoln MKX"; Ford recall 20S49, which also covers some Edge, Escape, Transit Connect and Corsair). Ford's dealer bulletin lists Nautilus built at Oakville from June 12, 2019 to June 17, 2020. A Lincoln dealer confirms each VIN.
How to Fix
Have a Lincoln dealer check the VIN for recall 20V550 / 20S49. Under the recall, the dealer replaces the start-stop accumulator and checks the transmission fluid level, free of charge. Ford's dealer bulletin says owners can keep driving unless they notice transmission fluid under the vehicle or transmission warning messages in the cluster; in that case, park in a safe place, turn the engine off and contact the dealer.
Sources for this issue (2)
P0868 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 P0868 mean on a Lincoln?
P0868 stands for "Transmission Fluid Pressure Low." This code indicates the transmission's internal fluid pressure is reading lower than the computer expects for current operating conditions. The transmission control module uses a pressure sensor to monitor line pressure, which is what applies the clutches and bands that engage gears. When that pressure stays below the target threshold, P0868 sets. Low line pressure can cause slipping, harsh or delayed shifts, and in severe cases internal clutch damage, so it should be addressed promptly. On Lincoln it is documented across 1 model: Nautilus.
What are the most common causes of P0868?
The most common causes of P0868 are: Low transmission fluid level, Worn or stuck-open pressure control solenoid, Internal leak (worn seals, gaskets, or valve body), Faulty transmission fluid pressure sensor, Clogged transmission filter, Failing transmission (oil) pump, Worn or leaking valve body, Wiring or connector fault to the pressure sensor/solenoid. The specific cause varies by vehicle.
How much does it cost to fix P0868 on a Lincoln?
Repair costs vary widely with the root cause and Lincoln model; each issue on this page carries its own estimate where one is published.
Looking for P0868 on a different make?
View P0868 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.