P27E7Transmission Range Control B Circuit/Open
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Can trigger limp mode
- How the car detects it
- 'Transmission Range Control' belongs to shift-by-wire, where the selected range travels as an electrical signal instead of a cable. Only channel A is documented in public: Mitsubishi's 2022 manual sets P07E8 when one of eight electric shift sensors in the selector rises above 4.5 V for 2.4 s with the ignition on, and names no fail-safe reaction. A B channel, which P27E7 would cover, is not described by any manufacturer, so P27E7 is best read as the same open-circuit test on a second, redundant circuit. GM's internal range selection uses a separate set of B codes, P27EF to P27F2, for its valve position sensor. Inspect selector connector and harness; the vehicle may refuse some ranges or shift to park only.
- What you may notice
- Warning about the shift system in the cluster
- Some ranges not accepted from the selector
- Likely causes
- LikelyLoose or corroded connector at the electric selector
- PossibleBroken wire between selector and control module
- PossibleSensor inside the selector assembly failed open
- 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.