OBD-II code · Powertrain (generic)
P0AC1 Hybrid/EV Battery Pack Current Sensor A Circuit Low
The ECM detects a circuit low fault on the hybrid/ev battery pack current sensor a circuit. Reading cannot be used reliably for control.
Is it safe to drive with P0AC1?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySignal wire shorted to ground
- PossibleInternal sensor short
- Less likelyConnector pins corroded - high contact resistance
Symptoms
- EV/hybrid system warning light on
- Reduced power output or limp mode
- Charging may fail or be slowed
- Reduced electric range
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 2–7 h
- Emissions test
- Usually unaffected
- Parts involved
- Hv Battery Pack Current Sensor A, Wiring Harness, Bms
Related codes
- P0B10Hybrid/EV Battery Pack Current Sensor B Circuit Low
- P0ABEHybrid/EV Battery Pack Voltage Sense A Circuit Intermittent/Erratic
- P0ABFHybrid/EV Battery Pack Current Sensor A Circuit
- P0AC0Hybrid Battery Cooling System Performance
- P0AC2Hybrid/EV Battery Pack Current Sensor A Circuit High
- P0AC3Hybrid/EV Battery Pack Current Sensor A Circuit Intermittent/Erratic
- P0AC4Hybrid/EV Powertrain Control Module Requested MIL Illumination
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.