P2E36Battery Charger B Enable Circuit Low
- Generic OBD-II code · Powertrain
- How the car detects it
- P2E36 means the enable signal to charger B is pulled under the level its commanded state allows, most often by a short to ground or by a driver stage that cannot pull the line up. No manufacturer documents P2E36 publicly. On the common active-high layout, which Holley's 30-8405 charger unit uses with a 12 V wake-up input drawing about 20 mA, a grounded line simply means the charger never receives its wake request. Lear's patent on waking an on-board charger from the pilot signal explains the background: the charger sleeps to spare the 12 V battery and needs a valid wake signal to start. A hard short may also overload the output stage in the commanding module. GM documents only the general A-side code P0E61. High is P2E37, open P2E35, charger A low P0E62. Charging via charger B fails.
- What you may notice
- Charger B stays off whenever charging is requested
- Lower charging power or no charging
- Likely causes
- LikelyEnable wire chafed and shorted to ground
- PossibleWater or corrosion in the charger B signal connector
- RareDamaged high-side driver in the commanding module
- Repair
- Hard · Usually a job for a workshop.Typical cost: €60 – €2,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.