P0C76

Hybrid/EV Battery System Discharge Time Too Long

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$167–1333 (est.)

Symptoms

Reduced motor power
Reducing electric range
More frequent engine starts in hybrid models
Warning messages on the instrument panel
Reduced efficiency of regenerative braking

Causes

Degradation of high-voltage battery cells
Problems with the battery thermal management system
Malfunction of voltage/temperature sensors
Problems with the Battery Management System (BMS)
High internal battery resistance

How to Fix

Diagnosis of high-voltage battery condition
Checking the battery cooling/heating system
Battery Sensor Testing
Battery Management System (BMS) Software Update
Replacing degraded battery modules

Related codes

P0C75 P0C77 P0A7F