P27E7 code meaning
Transmission Range Control B Circuit/Open
Powertrain system Generic code P27xx codes Check engine light
What P27E7 means
'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.
P27E7 at a glance
- Check engine lightYes, usually on
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P27E7
- Warning about the shift system in the cluster
- Some ranges not accepted from the selector
Common causes of P27E7
- Most likelyLoose or corroded connector at the electric selector
- PossibleBroken wire between selector and control module
- PossibleSensor inside the selector assembly failed open
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 P27E7 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. |
| E7 | The exact fault in that area. |
What to do next
- Note P27E7 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 P27E7
What does P27E7 mean?
P27E7 means "Transmission Range Control B Circuit/Open". 'Transmission Range Control' belongs to shift-by-wire, where the selected range travels as an electrical signal instead of a cable. It is a generic code, so it means the same on every make.
Is it safe to drive with P27E7?
Drive gently and only to a workshop. With P27E7 the car can go into limp mode (reduced power) to protect itself.
Will P27E7 fail an emissions test?
P27E7 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 P27E7 to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P27E7 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.