P27DC code meaning
Pressure Control Solenoid T Intermittent
Powertrain system Generic code P27xx codes Check engine light
What P27DC means
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.
P27DC at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium
- Typical labor1 to 4 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P27DC
- MIL lights up from time to time
- Occasional failed or late gear selection
Common causes of P27DC
- Most likelyLoose pin in the gearbox connector
- PossibleParticles briefly holding the valve spool
- Less likelyHarness rubbing through under vibration
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Pressure control solenoid tWiring harness
What each part of P27DC means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 7 | Area: transmission. |
| DC | The exact fault in that area. |
What to do next
- Note P27DC and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P27DC
What does P27DC mean?
P27DC means "Pressure Control Solenoid T Intermittent". With P27DC the module reports that solenoid T misbehaved only briefly before working again. It is a generic code, so it means the same on every make.
Is it safe to drive with P27DC?
Drive gently and only to a workshop. With P27DC the car can go into limp mode (reduced power) to protect itself.
Will P27DC fail an emissions test?
Yes, it can. P27DC is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P27DC to fix?
Difficulty: medium. A typical repair takes 1 to 4 hours of work. This is a job for a workshop.
Will P27DC clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.