P0B1F

Hybrid/EV Battery Pack Voltage Sense D Circuit Range/Performance

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–89 (est.)

Symptoms

Check Engine light comes on
Hybrid system power reduction
Incorrect battery level display
Switching to emergency mode
Increased fuel consumption (for hybrids)

Causes

Battery voltage sensor fault
Damage to the measuring circuit wiring harness
Poor contact in connectors
Problems with the battery management module
Corrosion of contacts in the measurement circuit

How to Fix

Check the integrity of the measuring circuit wiring harness
Inspect and clean connector contacts
Check voltage sensor readings
Test the battery management module
Replace faulty circuit components

Related codes

P0B1E P0B20 P0AFA