Powertrain, generic (extended)

P27DC Pressure Control Solenoid T Intermittent

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

With P27DC the module reports that solenoid T misbehaved only briefly before working again. No maker has published a description of this code. Ford's TR9070, the only known application of a valve T (selector pilot valve, 2024 overview), is covered by lasting electrical codes and by stuck-on and stuck-off codes, none of them sporadic. CARB 13 CCR 1968.2 requires the transmission actuators to be monitored. Because the selector pilot valve decides which rods the shift valves reach, even a short dropout can make a gear selection fail or arrive late. Freeze-frame data showing temperature and road conditions at the moment of the fault help more than a single resistance check in the workshop.

Likely causes

Loose pin in the gearbox connector
Particles briefly holding the valve spool
Harness rubbing through under vibration

Symptoms

  • MIL lights up from time to time
  • Occasional failed or late gear selection

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€80–800
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

P27DBP27DDP27D9P27DAP27D4

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