P0B73

Hybrid/EV Battery Voltage Sense L Circuit Range/Performance

Severity

🔴 High

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

Check Engine light comes on
Hybrid system power reduction
Increased fuel consumption
Battery charging problems
The vehicle goes into emergency mode

Causes

Damage to the voltage control circuit wiring harness
Battery voltage sensor fault
Poor contact in circuit connectors
Problems with the hybrid system control unit
Corrosion of contacts in the circuit

How to Fix

Check the integrity of the voltage control circuit wiring harness
Check connections and contacts in the circuit
Test battery voltage sensor
Check the operation of the hybrid system control unit
Replace damaged circuit components

Related codes

P0B74 P0B75 P0A80