P0ECC

Hybrid/EV Battery E Voltage

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$167–1111 (est.)

Symptoms

Reduced vehicle power
Warning messages on the dashboard
Limitation of operation in electric mode
Increased fuel consumption (in hybrids)
Battery charging problems

Causes

Degradation of high-voltage battery cells
Battery management system (BMS) malfunction
Problems with balancing battery cells
High voltage circuit damage
Battery contact corrosion

How to Fix

High voltage battery diagnostics
Checking the Battery Management System (BMS)
Cell Balancing Testing
Inspect the high voltage circuit for damage
Replacing damaged battery cells

Related codes

P0ECD P0ECF P0A7F