Powertrain, generic (extended)

P2D84 Battery Charger B Input Current Sensor Circuit High

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P2D84 is the high-side fault of charger B's input current sensor: its signal climbs above what the measuring range allows. No manufacturer documents P2D84 publicly, so the A-side code P0D3B serves as reference. For the 2022 Outlander PHEV, Mitsubishi counts half a second of sensor output above 4.658 V (around +54 A) as a supply-side short and halts charging. GM's Volt module of 2011 sets its Type A fault once more than 24.78 A of AC is reported in 160 out of 200 ms. Real currents of that size would exceed what the charger draws by design, so the fault almost always lies in the measuring chain. P2D84 differs from P0E89, where the current is judged too high, not the sensor. Low counterpart: P2D83.

Likely causes

Charger B current sensor output shorted toward its supply inside the unit
Current sensor of charger B failed (charger repair or replacement)
Reference or ground of the sensor lost, pushing the signal up

Symptoms

  • AC charging does not start or stops within seconds
  • Charging fault warning in the cluster

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€150–3,000
Time1–5 h

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

Parts involved

battery charger b input current sensoron board charger

Related codes

P2D83P2D85P0E8AP0D3BP0E89

References: law.cornell.edu, mitsubishitechinfo.com, gsi.ext.gm.com.