Powertrain, generic · Hybrid propulsion

P0D47 Battery Charger 14 Volt Output Current Sensor Circuit

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P0D47 is the general circuit code for the current sensor in the charger's 14 V output, the measurement of how much current the charger's internal low-voltage stage delivers. No manufacturer publishes this code; GM's Volt and ELR charger module measures the same current but reports only low and high readings (P0D49, P0D4A), with 54 A as its upper limit. Range and sporadic faults have the codes P0D48 and P0D4B. The Ford patent on a DC/DC stage housed in the charger describes such a unit feeding the 12 V bus whenever the car is connected to a charging station. Under CARB rules every input of this kind must be checked for circuit faults. Without a valid current value the charger cannot limit its auxiliary output, so it may switch that stage off.

Likely causes

Open or shorted current sense circuit of the low-voltage stage
Failed on-board charger electronics
Damaged 12 V output connector at the charger

Symptoms

  • 12 V battery discharges during long charging sessions
  • Charging may be interrupted

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 14v output current sensorwiring harnesson board charger

Related codes

P0D48P0D49P0D4AP0D4BP0D42P0D5B

References: law.cornell.edu, gsi.ext.gm.com, patents.google.com.