Hybrid System Faults (P400e)
SeriousElectrics & ElectronicsThe PHEV models can suffer from HV isolation faults or coolant pump issues, triggering a "Hybrid System Fault" warning.
Most affected: P400e PHEV
Estimated cost: £500–£2,000+Affects: 2020–2023Often appears around: 10k-40k miles
Typical symptoms
- •Red warning triangle
- •Vehicle fails to move
- •Charging failures
What to inspect before you buy
- ✓Software update history
- ✓Charging port condition