P2CC5Generator Inverter Power Supply B Circuit/Open
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P2CC5 concerns supply B inside the inverter that drives a hybrid's generator (motor-generator), typically a low-voltage rail feeding the gate drivers of the power transistors. Which supply gets the letter B is defined by the manufacturer; a second inverter channel or second generator would also fit. The code covers a missing supply or an interrupted feed. No manufacturer documents P2CC5 publicly. GM's 2019 hybrid tables show the principle with P0C0B for the drive motor A inverter: the IGBT module flags a bias fault when its supply dips below a threshold, and 0.168 s of failures within a 0.2 s window set a Type A code. CARB requires circuit monitoring of hybrid components. Without gate supply the generator cannot be switched at all. Supply A: P0E0F.
- What you may notice
- Hybrid system warning light and MIL on
- Generator out of operation, vehicle may not become ready to drive
- Likely causes
- PossibleSupply B for the gate drivers failed inside the inverter
- Possible12 V feed, fuse or connector of the inverter interrupted
- RarePoor ground connection of the inverter control electronics
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €100 – €4,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.