Powertrain, generic (extended)

P27DE Pressure Control Solenoid T Control Circuit Range/Performance

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P27DE would be set if the circuit of solenoid T is intact but delivers readings the controller considers implausible. No manufacturer documents the code. For the selector pilot valve of the TR9070, Ford's 2024 summary knows just three electrical faults, namely open load, shorted load and shorted switch, and GM checks the comparable Corvette pilot valve under its own K-block codes. CARB 13 CCR 1968.2 prescribes the general circuit and function monitoring for such actuators. Where a module does use P27DE, it hints at a gradual change rather than a clean break: a terminal with rising contact resistance, a coil whose resistance has crept away from nominal, or an output stage in the TCM that no longer regulates current properly.

Likely causes

Rising contact resistance at a terminal
Solenoid T resistance drifted from nominal
TCM output no longer regulating current

Symptoms

  • MIL on
  • Hesitant or inconsistent gear selection

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€100–900
Time1–4 h

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

Parts involved

pressure control solenoid twiring harness

Related codes

P27DDP27DFP27E0P27DBP282E

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