Powertrain, generic · Transmission

P08D6 Shift Solenoid K Performance/Stuck Off

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

Indicates that shift solenoid K was commanded on but the gear or clutch behind it never engaged, as if the valve stayed in its off position. No manufacturer documents this code publicly. A documented model is GM's P0751 for solenoid A on the 6-speed units: with first gear commanded, the TCM counts a fault when slip reaches 400 rpm and the measured ratio sits in a fixed window that points to the wrong gear, and it needs two trips to light the MIL. Ford infers a solenoid failed off from the obtained gear or shift pattern over three solenoid events. CARB requires this functional check. The reverse fault is P08D7. Typical signs are engine flare during shifts and a skipped gear.

Likely causes

Valve or shift spool held in rest position by debris or varnish
Low fluid level or weak line pressure
Leaking seal or worn clutch pack in the circuit fed by the valve

Symptoms

  • Check engine or transmission warning light on
  • Engine flare or slipping during shifts
  • A gear is skipped or missing

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€200–3,500
Time1.5–8 h

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

Parts involved

shift solenoid kvalve body

Related codes

P08CDP08D5P08D7P08D8P08DFP0751

References: gsi.ext.gm.com, fordservicecontent.com, law.cornell.edu.