Powertrain, generic · Transmission

P08DD Shift Solenoid K Control Circuit/Open

Check engine lightOn

EmissionsRelevant

Drive cycleNot required

Limp modePossible

Signals that the control circuit of shift solenoid K is open, so commanding the valve produces no current: a broken wire, a pushed-out terminal, a burnt coil or a failed internal transmission harness. No manufacturer documents this code publicly. Ford handles opens through the base code of each solenoid, P0750 for solenoid A, while GM's tables fold them into the circuit-high code P0974, so a separate open code like this one stays unused in both systems. CARB requires transmission outputs to be checked for opens. P08DB and P08DC are the short-circuit codes, P08D8 the general electrical fault. Without power the valve stays in its rest position, so one gear range drops out.

Likely causes

Broken wire or pushed-out terminal

Failed internal transmission harness

Burnt-out solenoid coil

Symptoms

Check engine or transmission warning light on
Some gears no longer available
Limp mode with fixed gear

Repair estimate

DifficultyHardWorkshop job

Parts and labour€80–1,500

Time1–5 h

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

Parts involved

shift solenoid kwiring harness

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