Hybrid/EV Battery Pack Cooling Fan 2 Sense Circuit Low
The HV battery pack cooling fan 2 sense circuit reports a sense circuit low fault. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
Affected components
- Hv battery cooling fan 2 sense
- Wiring harness
- Bms
Common causes
- High likelihood: Sense wire shorted to ground
- Medium likelihood: Tachometer shorted
- Low likelihood: Connector pins corroded - high contact resistance
Possible symptoms
- EV/hybrid system warning light on
- Reduced power output or limp mode
- Charging may fail or be slowed
- Reduced electric range
Diagnostic notes
- The malfunction indicator lamp may illuminate
- Reduced-power or limp mode may occur
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.