6R80 Expedition Common Problems and Fixes

The Expedition has a longer history with this gearbox family than any other Ford. GEARS Magazine traces the 6R60/6R75/6R80 line back to the ZF 6HP26 that Ford first bolted behind the 5.4L in the Expedition and Navigator. The 6R80 itself carried the Expedition from the 2009 model year through 2017, first behind the 5.4L three-valve V8 and then, from 2015, behind the 3.5L EcoBoost. Ford's fluid chart shows the 2017 Expedition still on the 6R80 and the 2018 truck on the 10R80, so that is your clean cutoff. If the Expedition in your bay is a 2018 or newer, you are on the wrong page.

Our 6R80 common problems guide covers the transmission in every vehicle, and the F-150 version covers the truck most people think of first. This one is for the Expedition and its Lincoln twin, the Navigator. They share the F-150's transmission, but they do not share all of its recalls, and that is where a lot of wrong quotes start. A heavy three-row SUV that tows a camper also puts its own kind of wear on the clutches and the fluid.

Start with the door tag. You need the model year and the build date, because Ford split the Expedition lead frame programs by build date at the Kentucky Truck Plant. Every document below is linked in the Sources section.

Recommended 6R80 parts

The parts behind the Expedition fixes on this page: a lead frame for OSS and range sensor faults and 5th-gear starts, a master rebuild kit when towing heat has burned the clutches, and a filter and pan gasket kit for the service that goes with any valve body job. Secure checkout on site.

6R80 Lead Frame Conductor Plate Kit 926-149 Ford F150

$209.99View part

6R80 Transmission Master Rebuild Kit, Ford F-150 Expedition Mustang

$383.99View part

6R80 Transmission Filter and Pan Gasket Kit - Ford F-150 Expedition Mustang

$38.99View part

Expedition 6R80 recall and bulletin map

Run the VIN through NHTSA's recall search or a Ford dealer's OASIS before you quote anything. Here is what Ford has published that names the Expedition or Navigator with the 6R80:

That last row matters. In April 2026 Ford filed recall 26V-237 for sudden downshifts caused by a degraded lead frame sending a false range sensor signal. The Part 573 report lists 1,392,935 vehicles, and every one of them is a 2015-2017 F-150. A 2015-2017 Expedition owner who read about that recall may come in expecting a free lead frame. As filed, the Expedition is not in it. The lead frame in a 2015-2017 Expedition is built the same way, though, so the same failure can show up. It just gets diagnosed and paid for like any other repair.

2009-2010 Expedition: the 5.4L years

The early trucks have the 5.4L three-valve and the pre-2011 internal design. Two things define them in the shop.

Downshift complaints that are software first

Ford's TSB 10-12-4 covers 2009-2010 Expedition and Navigator models built on or before 5/1/2010 that make a delayed, then harsh, downshift above 40 mph. The fix is a PCM/TCM reprogram followed by clearing the transmission adaptive tables and doing a relearn drive. It is not a hardware repair. Owners who had it done report that it does not address a low-speed 2-1 bump. On a truck this old the calibration has usually been updated by now, but confirm it before you go after clutches on a downshift complaint.

Early parts do not cross over

For 2011 Ford added a one-way clutch to the rear planetary to smooth the 1-2 and 2-1 shifts. GEARS Magazine documents the knock-on changes: the case, the C and D clutch support, the rear planetary, the valve body, the molded lead frame, the wiring harness and the PCM strategy for D clutch control. On the early design the D clutch holds through all of 1st gear. On the 2011-and-later design it applies only until about 3 mph and then releases, and the one-way clutch holds first. A 2009-2010 Expedition needs early-design parts in every one of those areas. Order by model year and the tag on the case, not by "6R80 Expedition."

These are also the oldest trucks, so expect leaks. If a 5.4L Expedition keeps leaking after the case connector O-rings have been replaced, check the vent on top of the case before you replace more seals. Our 6R80 leak guide walks through the vent check valve problem.

2011-2014 Expedition: the lead frame years

The 2011-2014 Expedition kept the 5.4L but got the late internal design, and with it the molded lead frame that caused trouble across the whole 6R80 lineup. The output shaft speed sensor lives on that lead frame. When its signal drops out at speed, the PCM thinks the vehicle has slowed down and commands 1st gear.

Ford's April 2016 recall announcement spells out how bad that can get. The abrupt speed reduction could cause the rear tires to slide or lock up. The recall covered about 202,000 vehicles, including 2012 Expeditions built at Kentucky Truck from 19-Aug-2011 through 19-Dec-2011 and Navigators built through 17-Dec-2011. Dealers checked for related codes, updated the PCM so an OSS fault no longer forces 1st gear, and replaced the lead frame when codes were present.

Ford then widened the net in two steps:

• Program 16N02 (2016) extended lead frame coverage to 10 years or 150,000 miles for 2012 Expeditions built 26-Aug-2011 through 6-Jun-2012. The parts list called for lead frame AL3Z-7G276-B, 9 quarts of MERCON LV (XT-10-QLVC), and filter BL3Z-7A098-A and pan gasket BL3Z-7A191-C as required. Ford allowed 2.1 hours on the Expedition and Navigator.
• Program 19N01 (2019) took in 2012-2013 Expedition and Navigator models built 11-Apr-2011 through 19-Aug-2013, with the PCM update done first under program 19B05. The lead frame was replaced free only if P0720, P0722, P0731 and/or P1500 were stored in the PCM. Supplement #3 from November 2020 moved the part to AL3Z-7G276-D, set labor at 2.2 hours, and stated that vehicles over 150,000 miles were not covered.

There is a second lead frame symptom on these years, and it looks nothing like the first. TSB 13-6-8 covers 2012-2013 Expedition and Navigator models built on or before 4/8/2013 that engage 5th gear when starting off. The wrench light may be on, the speedometer reads zero and the odometer shows dashes. The symptoms may clear after a key cycle, and P0720 and P0722 may or may not be stored. The repair is molded lead frame AL3Z-7G276-A, with 2.1 hours allowed on the Expedition, and the bulletin says plainly that the shift solenoids do not need to be replaced. Customers who get quoted a solenoid pack for this complaint are being sold parts they do not need.

What this means today: 10 years from the warranty start date has passed on every 2012-2013 Expedition, so a lead frame on one of these trucks is a customer-paid job. The recall calibration should be in the PCM by now. That calibration is a safety net, not a fix. It turns a forced downshift into a MIL and a code, and the bad signal is still there.

2015-2017 Expedition: EcoBoost and heavy use

The 2015 update put the 3.5L EcoBoost in front of the 6R80. That engine makes its torque low in the rev range, and a lot of these trucks spend their lives towing campers and boats. Ford's fluid chart lists the 2017 Expedition with the 6R80 and the 3.5L EcoBoost on MERCON LV.

Without an Expedition-specific recall to steer you, diagnose these by symptom:

• Sudden downshift, especially at highway speed. Same lead frame physics as the F-150 that got recall 26V-237. Graph the range sensor position and OSS on a road test. A range PID that flickers out of Drive while the selector has not moved is the lead frame.
• Harsh or flared shifts after a valve body or solenoid job. Sonnax's Jim Dial explains that the 6R80's variable bleed solenoids tend to lose their calibration, or banding, over time. The PCM needs the solenoid strategy and body ID codes from the valve body and the case tag so it knows each solenoid's band. Get them wrong, or reuse tired solenoids, and the adaptives will not settle. With good data, Dial says the relearn can often be finished in three to five shift cycles.
• Slipping or flare under load when towing. Heat and load wear the clutches. Read the fluid temperature PID while towing on a grade. If commanded gear and actual ratio disagree only when it is hot and loaded, look at the clutches and valve body wear, not just software.

How I diagnose a sudden downshift on an Expedition

1. Year, build date, recall status. Decide which row of the table above fits the truck. If an open program still applies, the owner should not pay for what Ford covers.
2. Read the code family. P0720 and P0722 point at output speed. Range sensor circuit codes point at the TRS. P0731 or P1500 next to them usually means the PCM saw a speed signal that did not make sense, not that a clutch slipped.
3. Graph it. Put Output Shaft Speed, Turbine Shaft Speed, the range position and ABS wheel speed on one screen. An OSS that drops to zero while the wheel speeds stay steady is the lead frame.
4. Rule out the outside. Wiggle the case connector and harness while watching the graph. Look at the pins for corrosion. A bad connector will make a new lead frame look bad too.
5. Then go inside. Replace the lead frame, enter the correct solenoid strategy and body ID data, reset the adaptives and do a full relearn drive.

Fluid on an Expedition 6R80

MERCON LV, Motorcraft XT-10-QLVC, in every 6R80 Expedition. MERCON ULV belongs in the 10R80 that starts in 2018, not here. Ford's chart also warns against supplemental additives, treatments and cleaners. There is no dipstick. Level is set hot through the fill plug, and our 6R80 fluid type and capacity guide covers the procedure.

Ford's own lead frame program is a useful benchmark for how much fluid a valve body job takes. It ordered 9 quarts of MERCON LV for each lead frame replacement on these trucks. A plain pan and filter service gives up less than that, because the converter and cooler circuit do not drain. If the Expedition tows regularly, change the fluid on a severe-service schedule. Heat is what kills the clutches in these trucks.

Expedition triage checklist

1. Year first. 2009-2010 early design, 2011-2014 late design with the 5.4L, 2015-2017 late design with the EcoBoost, 2018 and up is a 10R80.
2. Build date second. It decides which program, if any, applies.
3. Codes, then graphs. OSS and range position on a road test before parts.
4. 5th-gear start with dashes on the odometer. Lead frame per TSB 13-6-8, not solenoids.
5. Solenoid data. Strategy and body ID codes into the PCM after any valve body work.
6. Fluid. MERCON LV only, set hot, no additives.

Need parts for this job?

Expedition 6R80 lead frame kits, valve bodies by year, master rebuild kits, filter and pan gasket kits and MERCON LV are on our 6R80 parts page, with checkout on site.

FAQ

Is there a transmission recall on the 2015-2017 Ford Expedition?

Not one specific to the Expedition's 6R80. Ford's 2026 range sensor recall, 26V-237, covers 1,392,935 vehicles and every one is a 2015-2017 F-150. The Expedition uses the same lead frame design, so the same sudden-downshift failure can happen, but it is diagnosed and paid for as a normal repair. Run the VIN through NHTSA or a Ford dealer to be sure nothing new has been added.

Why does my Expedition start off in 5th gear with the speedometer at zero?

That is the condition in Ford TSB 13-6-8 for 2012-2013 Expedition and Navigator models built on or before 4/8/2013. The molded lead frame loses its speed signal, the odometer shows dashes and the wrench light may come on. The fix is lead frame AL3Z-7G276-A, and the bulletin says the shift solenoids do not need to be replaced.

Will Ford still replace the lead frame on my 2012 or 2013 Expedition for free?

Almost certainly not anymore. Programs 16N02 and 19N01 covered the lead frame for 10 years or 150,000 miles from the warranty start date, and only with P0720, P0722, P0731 or P1500 stored. Ten years has passed on every 2012-2013 Expedition, so the lead frame is now a customer-paid repair.

What transmission fluid does a 6R80 Expedition use?

MERCON LV, Motorcraft XT-10-QLVC, in every 2009-2017 Expedition with the 6R80. The 2018 and newer Expedition has the 10R80 and takes MERCON ULV, so do not mix them up. Ford also warns against adding supplemental additives or cleaners.

Which Expedition years have the 6R80 transmission?

The 2009 through 2017 Expedition and Navigator. The 2009-2014 trucks pair it with the 5.4L V8, the 2015-2017 trucks with the 3.5L EcoBoost, and the 2011-and-later units use the late internal design with the rear one-way clutch. The 2018 redesign moved to the 10-speed 10R80.

Related guides

• 6R80 Common Problems and Fixes
• 6R80 F150 Common Problems and Fixes
• 6R80 P0720: Output Speed Sensor Circuit Fix
• 6R80 Limp Mode Causes and Fix
• 6R80 Shift Solenoid Symptoms