Powertrain, generic (extended)

P2704 Transmission Friction Element E Apply Time Range/Performance

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

P2704 is stored when friction element E takes too long or too short a time to apply, judged against the speed change the controller expects for the shift. Ford bulletins tie the code directly to the E clutch. TSB 23-2376 describes F-550/F-600 trucks of model year 2022 with the 6.7L diesel and 10R140: once they have covered over 8,000 km the input shaft wears against the E clutch hub, its O-rings fail and the E clutch circuit loses pressure, so P2704 appears with P0771 and the wrench lamp; hub and O-rings are renewed. On the 2020 Transit with the 10R80, TSB 20-2185 links P2704 and P0772 to harsh engagement into drive from sticking valves. Land Rover's SSM71847 lists P2704-07 among ZF 9HP48 faults on 2014-15 Evoque and Discovery Sport.

Likely causes

Pressure loss in the E clutch circuit from worn hub or damaged O-rings
Sticking valves in the main control valve body
Transmission control software needing an update
Low fluid level from a leak

Symptoms

  • Harsh engagement into drive or poor shift quality
  • Wrench, engine or gearbox warning on
  • Limp mode in a fixed gear on some gearboxes

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€150–4,000
Time1–14 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

friction element ehydraulic control unitpressure control solenoid

Related codes

P2700P2701P2702P2703P2705P0771P0772

References: static.nhtsa.gov, static.nhtsa.gov, static.nhtsa.gov.