Powertrain, generic · Transmission

P07DB 7-8 Shift

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

Shift codes check the gear change itself: the module compares the commanded change with the speed trace and flags a shift that takes too long, does not happen, flares or binds up two clutches. They continue the series P0781 '1-2 Shift' to P0784 '4-5 Shift'. No manufacturer document available to us uses P07DA or P07DB: Ford's Diesel summary checks shift completion (speed must drop by more than 30 rpm on an upshift, flare above 300 rpm) without a gear-specific code, Ford's 10R80 feeds the solenoid function codes and GM the clutch valve codes. P07DB names the change between 7th and 8th gear, in either direction, as faulty; it exists only on transmissions with eight or more gears. Flags and thresholds follow the manufacturer's own logic.

Likely causes

Shift or clutch valve sticking
Worn clutch or hydraulic leak on the clutches involved
Shift adaptives wrong
Fluid level or condition

Symptoms

  • Harsh, delayed or missing 7-8 shift
  • Engine speed flares during the shift
  • Transmission warning, possibly MIL

Repair estimate

DifficultyHardWorkshop job
Parts and labour€150–4,000
Time0–12 h

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

Parts involved

transmission valve bodyshift solenoidtransmission clutchestransmission control module

Related codes

P0780P07DAP07D9P076F

References: fordservicecontent.com, law.cornell.edu.