P0BA1

Hybrid/EV Battery Voltage Sense U Circuit Low

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–222 (est.)

Symptoms

Hybrid system power reduction
Increased fuel consumption
Check Engine Light Illuminates
Unstable operation of the hybrid system
Low battery power

Causes

Voltage sensor fault U
Open or short circuit in wiring
Poor contact in connectors
Battery management module malfunction
Problems with the hybrid battery itself

How to Fix

Check voltage sensors U
Inspect wiring and connectors for damage
Check the condition of the hybrid battery
Test the battery management module
If necessary, replace faulty components

Related codes

P0BA0 P0BA2 P0BA3