OBD-II code · Powertrain (generic)
P0E81 Battery Charger B Temperature Sensor Circuit Range/Performance
The ECM detects a range/performance fault on the battery charger b temperature sensor circuit. Reading cannot be used reliably for control.
Is it safe to drive with P0E81?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySensor characteristic drifted
- PossibleSensor mounting displaced
- 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
- 1–5 h
- Emissions test
- Usually unaffected
- Parts involved
- Battery Charger B Temp Sensor, Wiring Harness, Bms
Related codes
- P0E7EAuxiliary Cooling Coolant Temperature Sensor A Circuit High
- P0E7FAuxiliary Cooling Coolant Temperature Sensor A Circuit Intermittent/Erratic
- P0E80Battery Charger B Temperature Sensor Circuit
- P0E82Battery Charger B Temperature Sensor Circuit Low
- P0E83Battery Charger B Temperature Sensor Circuit High
- P0E84Battery Charger B Temperature Sensor Circuit Intermittent/Erratic
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.