Powertrain
generic / SAE
P0B9D
Hybrid/EV Battery Voltage Sense T Circuit High
The BMS detects a circuit high fault on voltage sense channel T of the high-voltage battery. Cell-group voltage measurement is unreliable on this channel.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / numberB / 9D
Possible causes
- Sense wire shorted to higher voltage high
- Reference regulator overvoltage medium
- Connector pins corroded - high contact resistance low
Symptoms
- EV/hybrid system warning light on
- Reduced power output or limp mode
- Charging may fail or be slowed
- Reduced electric range
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
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References
sae:J2012