P0BC9

Hybrid/EV Battery Pack Cooling Fan 1 Sense Circuit Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–89 (est.)

Symptoms

Check Engine light comes on
Reduced performance of the hybrid system
Battery overheating
Noisy cooling fan
Reduced vehicle power

Causes

Open or short circuit in the sensor circuit
Fan sensor malfunction
Problems with the cooling fan itself
Poor contact in connectors
Battery management module malfunction

How to Fix

Check the integrity of the sensor circuit
Check the condition of connectors and contacts
Test the fan sensor
Check the operation of the cooling fan
If necessary, replace the sensor or fan

Related codes

P0BCA P0BCB P0BCC