What are the common causes of P0BC7?

An open in the cooling fan 1 sense circuit. A damaged fan 1 sense connector. A failed fan 1 sense element. A broken sense lead in the fan harness. A battery energy control module input fault.

Read cooling fan 1 sense data on a scan tool. Test the fan 1 sense circuit for an open. Check the fan 1 sense connector pins. Measure the fan 1 sense signal at the module. Replace the fan assembly if the sense element is dead. Clear the code and retest.

P0BC7

Hybrid/EV Battery Pack Cooling Fan 1 Sense Circuit/Open

System: Powertrain control (P code)
Lamp: Check Engine Light
Category: Powertrain - Hybrid Propulsion

What it means

P0BC7 means Hybrid/EV Battery Pack Cooling Fan 1 Sense Circuit/Open.

Check these first

An open in the cooling fan 1 sense circuit
A damaged fan 1 sense connector
A failed fan 1 sense element
A broken sense lead in the fan harness
A battery energy control module input fault

What to do next

Read cooling fan 1 sense data on a scan tool
Test the fan 1 sense circuit for an open
Check the fan 1 sense connector pins
Measure the fan 1 sense signal at the module
Replace the fan assembly if the sense element is dead
Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.