P0B90

Hybrid/EV Battery Voltage Sense R Circuit

Severity

🔴 High

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–278 (est.)

Symptoms

Check Engine light comes on
Reduced vehicle power
The car goes into emergency mode
Unstable operation of the hybrid system
Problems with charging a high-voltage battery

Causes

Open or short circuit in the sensor circuit
Faulty battery voltage sensor
Poor contact in circuit connectors
Problems with the Battery Management Module (BMS)
Contact corrosion in a high voltage system

How to Fix

Check the integrity of the sensor circuit wiring
Check the connections and contacts of the sensor
Test battery voltage sensor
Check the functionality of the battery management module
If necessary, replace faulty components

Related codes

P0B91 P0B92 P0A80