P27E8Transmission Range Control B Circuit Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Needs a drive cycle to confirm a fix
- How the car detects it
- P27E8 is the plausibility test for range control circuit B: the signal is neither open nor shorted, yet its value makes no sense, for example a level stuck between the valid on and off windows. The title reads Circuit Performance, without Range. No manufacturer publishes the code. Mitsubishi's 2022 shift-by-wire CVT shows the A version, P07E9: a selector sensor voltage sitting for 2.4 s in a forbidden band (such as 2.12 to 2.67 V) counts as a fault, with no fail-safe action because the other sensors still identify the position. A second channel would be judged the same way. Contact resistance, moisture in the selector or an aging Hall element are the likely sources. Open, low and high are P27E7, P27E9 and P27EA.
- What you may notice
- Intermittent shift system warning
- Displayed range occasionally flickers or lags
- Likely causes
- LikelyContact resistance at selector terminals shifting the voltage
- PossibleSpilled drink or moisture inside the selector
- PossiblePosition sensor in the selector degrading
- Repair
- Medium · Usually a job for a workshop.Typical cost: €60 – €1,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.