OBD-II code · Powertrain (generic)
P0EFB Battery Charger A Input Voltage Sensor B Circuit Intermittent/Erratic
The ECM detects a intermittent/erratic fault on the battery charger a input voltage sensor b circuit. Reading cannot be used reliably for control.
Is it safe to drive with P0EFB?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySensor connector not seated
- PossibleNoisy ground reference
- Less likelyConnector with intermittent contact under vibration
Symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–5 h
- Emissions test
- Usually unaffected
- Parts involved
- Battery Charger A Input Voltage Sensor B, Wiring Harness, Bms
Related codes
- P0D41Battery Charger A Input Voltage Sensor A Circuit Intermittent/Erratic
- P0EF8Battery Charger A Input Voltage Sensor B Circuit Range/Performance
- P0EF9Battery Charger A Input Voltage Sensor B Circuit Low
- P0EFABattery Charger A Input Voltage Sensor B Circuit High
- P0EFCBattery Charger A Input Voltage Sensor C Circuit
- P0EFDBattery Charger A Input Voltage Sensor C Circuit Range/Performance
- P0EFEBattery Charger A Input Voltage Sensor C Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.