P27EA code meaning
Transmission Range Control B Circuit High
Powertrain system Generic code P27xx codes Check engine light
What P27EA means
With P27EA, a signal of range control circuit B reads near the supply voltage, which usually means a short to a power wire or a broken ground return that lets the line float high. No manufacturer documents the B code openly. Mitsubishi's channel A twin, P07EB, sets above 4.5 V on one of the eight sensors in the electric selector for 2.4 s and lists a short to power as cause; normal driving remains possible. A missing sensor ground produces the same picture as a short to battery, so check the ground pin before replacing the selector. In shift-by-wire systems a high reading on one channel is cross-checked against the remaining channels. P27E9 is the low counterpart, P27E7 the open circuit.
P27EA at a glance
- Check engine lightYes, usually on
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyMedium
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P27EA
- Shift system message in the cluster
- Car usually still drives normally
Common causes of P27EA
- Most likelySignal line shorted to a supply wire
- PossibleSensor ground open, signal floats high
- Less likelySelector electronics faulty
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Transmission range control actuator bWiring harnessTCM
What each part of P27EA 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. |
| EA | The exact fault in that area. |
What to do next
- Note P27EA 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 P27EA
What does P27EA mean?
P27EA means "Transmission Range Control B Circuit High". With P27EA, a signal of range control circuit B reads near the supply voltage, which usually means a short to a power wire or a broken ground return that lets the line float high. It is a generic code, so it means the same on every make.
Is it safe to drive with P27EA?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will P27EA fail an emissions test?
P27EA is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is P27EA to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P27EA clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.