OBD-II code · Powertrain (generic, extended)
P2E84 Battery Charger B Input Voltage Sensor Circuit Range/Performance
The input voltage sensor of battery charger B reports a range/performance fault. Mains input voltage measurement is unreliable.
Is it safe to drive with P2E84?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySensor characteristic drifted
- PossibleHigh-resistance contact
- Less likelySensor element aged beyond calibration window
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
- 1–4 h
- Emissions test
- Usually unaffected
- Parts involved
- Battery Charger B Input Voltage Sensor, Wiring Harness, Bms
Related codes
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.