P0E6ABattery Charging System Precharge Contactor Circuit
- Generic OBD-II code · Powertrain
- How the car detects it
- P0E6A is the general code for the precharge contactor of the battery charging system. Before the main charging contactors close, this small contactor feeds the charger side through a resistor so the voltage can rise gently towards pack voltage; without it the main contacts would arc. The code collects faults of this branch that fit none of the more specific siblings. No manufacturer documents P0E6A publicly. GM's 2019 hybrid tables watch the same function under their own codes: the charger bus must reach 95 to 105 percent of pack voltage within 0.7 seconds (P0D26), and battery current above 3 A for about 87 ms during precharge sets P3061, both Type A. CARB requires charger malfunctions that block charging to be detected. Stuck faults are P0E6B and P0E6C, coil circuit faults P0E6D to P0E70.
- What you may notice
- Charging session aborts right at the start
- Charging not possible, driving usually still possible
- Likely causes
- PossiblePrecharge resistor burnt open or overheated
- PossibleWorn or sluggish precharge contactor in the charging path
- RareCharger-side voltage measurement reading wrongly
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €200 – €2,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.