P1E01
Hybrid/Electric Vehicle Battery 95 Circuit Performance
Severity
🔴 HighCan you drive?
Do not drive — repair immediately
Approx. repair cost
$167–889 (est.)
Symptoms
- Reduced vehicle power
- Switching to emergency mode
- Warning messages on the instrument panel
- Battery charging problems
- Increased fuel consumption (in hybrids)
Causes
- High voltage battery wear
- Problems with the Battery Management System (BMS)
- Damage to high voltage wires or connectors
- Power electronics fault
- Corrosion of contacts in the battery circuit
How to Fix
- Diagnosis of high-voltage battery condition
- Checking the Battery Management System (BMS)
- Inspection of high voltage connections and wiring
- Power electronics testing
- Replacing damaged components
- Repair only from an authorized dealer