P0BBF

Hybrid/EV Battery Pack Cooling Fan Supply Voltage Circuit/Open

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
Cooling fan is noisy or not working
Hybrid battery overheating
The car goes into emergency mode

Causes

Fan power supply circuit open
Faulty fan relay
Blown fuse
Wiring Harness Problems
Malfunction of the hybrid system control unit

How to Fix

Check fan circuit fuses
Check fan relay
Inspect the wiring harness for damage
Check the voltage at the fan connector
Test the operation of the fan with the ignition on

Related codes

P0BBE P0BC0 P0AFA