Powertrain, generic

P0E8A Battery Charger B Input Current Sensor Circuit

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P0E8A concerns the measurement, not the current itself: the sensor that tells charger B how much current enters at its input delivers no usable signal. It is the general circuit code; range, low and high faults of the same sensor sit at P2D85, P2D83 and P2D84, and the sensor of charger A uses P0D38. No manufacturer documents P0E8A publicly. That the B input current is evaluated is clear from P0E89, which Toyota sets on the RAV4 Prime as a circuit current above threshold and Ford tests against a 100 A limit. CARB requires inputs such as this to be checked for open circuits and out-of-range signals. In most chargers the sensor sits inside the unit, so a confirmed fault usually means repairing or replacing the charger. Without the reading, charging is refused or stopped.

Likely causes

Current sensor or its evaluation inside charger B defective
Open or shorted sensor wiring where the sensor is external
Charger software misjudges the sensor signal

Symptoms

  • AC charging does not start or is aborted
  • Charging fault indication; driving remains possible

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€100–2,500
Time0.5–4 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

battery charger b input current sensorwiring harnesson board charger

Related codes

P2D83P2D84P2D85P0D38P0E88P0E89

References: law.cornell.edu, static.nhtsa.gov, fordservicecontent.com.