P2704: Transmission friction element E apply time out of range

Transmission friction element E apply time range/performance

Severity: Inspect soon

PartsAvatar rates the code moderate and warns that continued driving risks transmission damage, and Ford bulletins pair it with harsh shifts and a wrench light.

Source: how we rate severity

P2704 in short

P2704 means clutch E in the automatic transmission is applying outside its expected time. Ford bulletins link it to sticking valves in the 10R80 valve body, worn E clutch hub O-rings on the 10R140 diesel, and software. Check fluid first and have it inspected soon, since driving on can damage the transmission.

The transmission computer times how long a clutch takes to apply. If friction element E is outside that window, it sets P2704. Which clutch is E depends on the transmission.

Ford has three bulletins: 2020 Transit with the 10R80 and harsh engagement into drive from sticking valve body valves (most improve after 100 miles); 2022 F-550 and F-600 with the 10R140 and 6.7L diesel, where wear between the input shaft and E clutch hub damages O-rings; and 2023-2025 diesel Super Duty trucks where TCM software is the cause.

Without a bulletin, the generic list starts with low or degraded fluid, then wiring and connectors, the solenoid or valve body, and internal wear.

Most likely causes

Cause 1: Low or degraded transmission fluid
Common general cause
Why it ranks here
PartsAvatar lists low or degraded fluid first and says to check level and condition before anything else.
What would change this
Rises if fluid is low or dark. Falls if normal.
Cause 2: Sticking valves in the main control valve body (Transit 10R80)
Supported by vehicle data
Why it ranks here
Ford TSB 20-2185 names sticking valve body valves for harsh engagement into drive with P0772 and/or P2704, and most vehicles improve with driving.
What would change this
Rises on a 2020 Transit with harsh drive engagement. Falls on other vehicles.
Cause 3: Worn E clutch hub and input shaft O-rings (F-550/F-600 10R140 diesel)
Supported by vehicle data
Why it ranks here
Ford TSB 23-2376 names input shaft O-ring damage from hub wear, causing an open E clutch circuit, with P2704 and P0771.
What would change this
Rises on a covered 2022 F-550 or F-600 over 5,000 miles. Falls on other vehicles.
Cause 4: Transmission control module software (diesel Super Duty)
Supported by vehicle data
Why it ranks here
Ford TSB 26-2086 names TCM software for poor shifts with P2704 and P0771 on 2023-2024 F-250 to F-450 and some 2024 F-550/F-600.
What would change this
Rises on a covered truck. Falls once the software is current.
Cause 5: Wiring, connector, solenoid or control module fault
Possible — needs testing
Why it ranks here
PartsAvatar lists the TCM harness, connectors, solenoid or valve body, and the TCM as possible causes.
What would change this
Rises if connectors show corrosion or fit problems. Falls if they are clean.
How to test the transmission control module (tcm)

What to test first

Start at step 1. Each result tells you what it means and where to go next.

Step 1: Ask a dealer whether your VIN has a transmission bulletin or software update for P2704.
Low risk
- IfA bulletin or software update applies
  It meansDo that before replacing parts.
  Points to: Transmission control module software (diesel Super Duty)
- IfNo bulletin applies
  It meansCheck the fluid.
  Go to step 2
Step 2: Check the transmission fluid level and condition the way the owner's manual describes. Many transmissions have no dipstick; leave those to a shop.
Use cautionTool: transmission dipstick, if fitted
Warning:Run the check only as the owner's manual describes; the transmission is hot and has moving parts nearby.
- IfFluid is low or degraded
  It meansService the fluid and watch whether the code returns.
  Points to: Low or degraded transmission fluid
- IfFluid is normal
  It meansHave the wiring and valve body checked.
  Go to step 3
Step 3: Have a shop check the TCM connector and wiring, look at clutch E data and inspect for internal wear.
Best left to a shop
Warning:Transmission work involves hot fluid and heavy, moving parts; leave this to a shop.
- IfPoor connections or corrosion
  It meansRepair the connection.
  Points to: Wiring, connector, solenoid or control module fault
- IfHarsh engagement on a 2020 Transit
  It meansSticking valve body valves are likely.
  Points to: Sticking valves in the main control valve body (Transit 10R80)
- IfWrench light and P0771 on a covered diesel truck
  It meansHub O-ring wear or software.
  Points to: Worn E clutch hub and input shaft O-rings (F-550/F-600 10R140 diesel)

Symptoms

Harsh engagement into Drive or harsh shifts
Wrench or check engine light
Transmission slipping or reduced power Gets more serious: stop and have it checked.

How to fix

Step 1: Ask a dealer whether your VIN has an open bulletin or software update for P2704.

On your vehicle

Ford

2020 · Transit
Supported by vehicle data
Ford TSB 20-2185 covers harsh engagement into Drive with P0772 and/or P2704 on the 2020 Transit with the 10R80. Whether the bulletin is still current is not verified.

TSB 20-2185Status unverified
Transit 10R80 harsh engagement with P0772 and/or P2704
2020transit · NHTSA 10176834
Sticking main control valve body valves; drive procedure or replace valve body. Only the NHTSA summary was read.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
TSB 23-2376Status unverified
F-550/F-600 10R140 diesel wrench lamp with P2704 and P0771
2022 · NHTSA 10248351
Replace the E clutch hub and input shaft O-rings. Only the NHTSA summary was read.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
TSB 26-2086Status unverified
Super Duty poor shift quality with P2704 and P0771
2023–2024f-250, f-350 · NHTSA 11029924
Cause is TCM software. Only the NHTSA summary was read. Also covers F-450, F-550 and F-600.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

All Transmission codes

Sources and review

OBD Code P2704: Transmission Friction Element "E" Apply Time Range/Performance — PartsAvatar
Ford TSB 20-2185: 2020 Transit 10R80 harsh engagement with P0772 and/or P2704 — Ford Motor Company / NHTSA
Ford TSB 23-2376: 2022 F-550/F-600 10R140 wrench lamp with P2704 and P0771 — Ford Motor Company / NHTSA
Ford TSB 26-2086: Super Duty poor shift quality with P2704 and P0771 — Ford Motor Company / NHTSA
Ford TSB 25-2423: No upshift past second with P0757 and P2701 — Ford Motor Company / NHTSA

Last reviewed: October 15, 2026
Written by: Saurabh K.
Editorial review: Pending
Technician review: Technician review pending

This page explains what a code usually means; it is not a substitute for a professional inspection. How we source and review · Report an error

Severity: Inspect soon

Most likely causes

Cause 1: Low or degraded transmission fluid

Cause 2: Sticking valves in the main control valve body (Transit 10R80)

Cause 3: Worn E clutch hub and input shaft O-rings (F-550/F-600 10R140 diesel)

Cause 4: Transmission control module software (diesel Super Duty)

Cause 5: Wiring, connector, solenoid or control module fault

What to test first

Step 1: Ask a dealer whether your VIN has a transmission bulletin or software update for P2704.

Step 2: Check the transmission fluid level and condition the way the owner's manual describes. Many transmissions have no dipstick; leave those to a shop.

Step 3: Have a shop check the TCM connector and wiring, look at clutch E data and inspect for internal wear.

Symptoms

How to fix

On your vehicle

FordYour car

Related codes

Sources and review

Ford