Code result
P0BC9
Hybrid/EV Battery Pack Cooling Fan 1 Sense Circuit Low
High severity
What it means
The HV battery pack cooling fan 1 sense circuit reports a sense circuit low fault. Fan speed feedback is unreliable.
Is it safe to drive?
No — stop driving
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.
Most likely causes
Sense wire shorted to ground
highOne of the most commonly reported causes for this code — check this first.
Tachometer internal short
mediumA plausible cause — test and verify before replacing parts.
Connector pins corroded - high contact resistance
lowLess common, but worth ruling out after the more likely causes.
Related help
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