P0ABC

Hybrid/EV Battery Pack Voltage Sense A Circuit Low

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–1667 (est.)

Symptoms

Check Engine light comes on
Hybrid system power reduction
Problems with charging a high-voltage battery
The vehicle goes into emergency mode
Reducing electric range

Causes

High voltage battery fault
Damage to the voltage measurement circuit
Battery voltage sensor fault
Connector problems or contact corrosion
Malfunction of the hybrid control module (HCU)

How to Fix

Check the condition of the high-voltage battery
Check the integrity of the voltage measurement circuit
Check battery voltage sensors
Inspect connectors and contacts for corrosion
Perform diagnostics on the HCU module

Related codes

P0AAB P0AAD P0AAE