P0E40Charge Status Indicator A Control Circuit High
- Generic OBD-II code · Powertrain
- How the car detects it
- P0E40 is logged when the drive circuit of charge status indicator A carries voltage although the light is commanded off, typically because the line touches a live wire. P0E40 has no public documentation from any manufacturer. In GM's 2012 Volt tables (12OBDG01A) this is the second case inside P0D2C: with the LED switched off, the hybrid controller looks for a short to battery and needs 40 bad samples out of 50 at 100 ms. A light that glows while nothing is charging, or keeps glowing after charging has ended, is the visible result and can mislead the owner about the charge state. Suspects are wiring near the dash or charge port, water in a connector or a driver stage that no longer switches off. P0E3F is the low case on the same light.
- What you may notice
- Charge status light on although nothing is charging
- Owner misled about the actual charge state
- Likely causes
- LikelyIndicator wire shorted to a battery-fed circuit
- PossibleOutput driver no longer switching off
- RareMoisture bridging pins in the indicator connector
- Repair
- Medium · Usually a job for a workshop.Typical cost: €40 – €400
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.