Powertrain, generic · Transmission

P08DA Shift Solenoid K Control Circuit Range/Performance

Check engine lightOn

EmissionsRelevant

Drive cycleNot required

Limp modePossible

Points to a control circuit of shift solenoid K that is neither open nor shorted, yet whose measured values, usually coil current, do not fit the commanded state. No manufacturer documents this code publicly, and the analogue for solenoid A, P0972, is not used in the GM or Ford sources either. Ford covers the same failure with an electrical current check that trips when the feedback current stays out of range for 0.5 seconds. Causes are typically a coil with changed resistance, a high-resistance contact or a weak TCM driver. CARB requires output circuits to be checked beyond plain opens and shorts. P08DB, P08DC and P08DD cover low, high and open. The valve may switch late or incompletely.

Likely causes

Solenoid coil resistance out of specification

Corroded or loose pins adding resistance

TCM output stage no longer delivers correct current

Symptoms

Check engine or transmission warning light on
Delayed or soft shifts
Possible limp mode

Repair estimate

DifficultyHardWorkshop job

Parts and labour€100–1,500

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, law.cornell.edu.