Powertrain, generic · Transmission

P07A8 Transmission Friction Element D Performance/Stuck Off

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

Each friction element (clutch or brake) has three functional codes: slip while commanded locked (P079A ff), performance/stuck off – it does not apply or applies too weakly – and stuck on – it does not release. No manufacturer document available to us uses this code: GM's hybrids report clutch D only as slip (P079D) or stuck on (P07A9), Ford's DPS6 dual-clutch has only clutches A and B. The description follows the family. A clutch that does not apply means a missing gear or slip, typically from worn plates, low pressure or a sticking valve.

Likely causes

Clutch D plates worn or piston seal leaking
Too little apply pressure (fluid, pump, valve)
Clutch actuator or valve sticking (DCT: electric actuator)
Module software or lost adaption

Symptoms

  • Check engine light or transmission warning
  • Gear missing or slipping, weak acceleration
  • Limp mode

Repair estimate

DifficultyHardWorkshop job
Parts and labour€200–4,500
Time1–12 h

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

Parts involved

transmission clutchestransmission valve bodyhybrid control module

Related codes

P07A9P079DP2703P0730

References: law.cornell.edu, patents.google.com, newtonnet.co.uk.