P27DB code meaning
Pressure Control Solenoid T Electrical
Powertrain system Generic code P27xx codes Check engine light
What P27DB means
P27DB is a catch-all for electrical trouble on solenoid T that does not name the kind of fault. No manufacturer publishes it. The only known valve T is the selector pilot valve of Ford's TR9070 dual-clutch gearbox, and Ford's 2024 overview splits that valve's wiring faults into P27DD for open load, P27DF for a shorted switch and P27E0 for a shorted load instead of using this code. GM's Corvette has a comparable pilot valve but numbers it under the K block (P282D to P2830). CARB 13 CCR 1968.2 demands circuit monitoring of transmission actuators in general. Diagnosis follows the detailed codes: coil ohms, connector pins, harness insulation, then the TCM.
P27DB 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 P27DB
- MIL on
- Restricted gear choice
- Limp mode possible
Common causes of P27DB
- Most likelySolenoid T coil open or shorted
- PossibleCorrosion or poor fit at the gearbox connector
- Less likelyDefective TCM output for solenoid T
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Pressure control solenoid tTCMWiring harness
What each part of P27DB 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. |
| DB | The exact fault in that area. |
What to do next
- Note P27DB 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 P27DB
What does P27DB mean?
P27DB means "Pressure Control Solenoid T Electrical". P27DB is a catch-all for electrical trouble on solenoid T that does not name the kind of fault. It is a generic code, so it means the same on every make.
Is it safe to drive with P27DB?
Drive gently and only to a workshop. With P27DB the car can go into limp mode (reduced power) to protect itself.
Will P27DB fail an emissions test?
Yes, it can. P27DB 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 P27DB to fix?
Difficulty: medium. A typical repair takes 1 to 4 hours of work. This is a job for a workshop.
Will P27DB clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.