P27EATransmission Range Control B Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- How the car detects it
- 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.
- What you may notice
- Shift system message in the cluster
- Car usually still drives normally
- Likely causes
- LikelySignal line shorted to a supply wire
- PossibleSensor ground open, signal floats high
- RareSelector electronics faulty
- Repair
- Medium · Usually a job for a workshop.Typical cost: €60 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.