Powertrain, generic · Transmission

P07F7 Gear 10 Incorrect Ratio

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

A ratio code compares input or turbine speed divided by output speed with the ratio of the commanded gear; a slipping clutch or the wrong gear trips it. Ford's summaries describe the check (over 30 rpm off for more than 1.8 s, three times) for gears 1–6 only; its 10-speed bulletins show gears 7–10 as P076F, P07D9, P07F6 and P07F7. P07F7 covers 10th gear, so in practice only ten-speed automatics. Ford's 10R80 lists it in all its ratio bulletins. On the 2020 Super Duty with the 10R140 a 2025 bulletin shows P07F7 alone, with the powertrain wrench lamp instead of the MIL and 10th gear locked out, caused by a migrating sleeve in a clutch cylinder that leaks; an earlier bulletin blames sticking main valve-body valves. GM's 10-speed reports through clutch valve codes instead.

Likely causes

Clutch slipping or hydraulic leak (Ford 10R: migrating sleeve in the CDF clutch cylinder)
Shift adaptives wrong or not learned
Sticking valve in the valve body
Fluid level low or fluid degraded
Turbine or output speed sensor signal wrong

Symptoms

  • Slipping or flaring engine speed in gear 10
  • Harsh or delayed shifts
  • Check engine or transmission warning lamp
  • Gear 10 locked out, higher rpm at cruise

Repair estimate

DifficultyHardWorkshop job
Parts and labour€300–4,500
Time1–14 h

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

Parts involved

transmission clutchestransmission valve bodytransmission fluidtransmission control module

Related codes

P07F6P07D9P07FBP07FCP0730

References: static.nhtsa.gov, static.nhtsa.gov, static.nhtsa.gov, fordservicecontent.com.