P0CA5

Hybrid/EV Battery Discharging Voltage High

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$167–889 (est.)

Symptoms

Check Engine light comes on
Reduced vehicle power
Switching to emergency mode
Reducing electric range
Possible error messages on the display

Causes

Malfunction of high-voltage battery elements
Problems with the battery cooling system
Battery Management Module (BMS) malfunction
Damage to high voltage connections
Software errors in the control system

How to Fix

Diagnosis of high-voltage battery condition
Checking the battery cooling system
Testing the Battery Management Unit (BMS)
Checking the integrity of high voltage connections
Control system software update

Related codes

P0CA4 P0CA6 P0C00