P0B53

Hybrid/EV Battery Voltage Sense E Circuit Intermittent/Erratic

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Check Engine light comes on
Reduced performance of the hybrid system
Unstable battery voltage readings
Battery charging problems
Reduced engine power

Causes

Damage to the voltage measurement circuit wiring harness
Battery voltage sensor fault
Poor contact in circuit connectors
Contact corrosion
Problems with the battery management module

How to Fix

Check the integrity of the voltage measurement circuit wiring harness
Inspect connectors and contacts for damage and corrosion
Check battery voltage sensor
Test the battery management module
Replace damaged components

Related codes

P0B54 P0B55 P0B56