Powertrain, generic

P0EA2 DC/DC Converter Current Sensor C Circuit Low

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P0EA2 is stored when current sensor C of a DC/DC converter reports a raw value under its lower limit. Because current sensors in these units normally place their zero-current output at mid-supply, a value near zero volts rarely means low current; it points to a ground short, a lost sensor supply or a broken signal path. No manufacturer documents P0EA2 publicly. The closest published case is Porsche's P0E9D00 on the B channel of the Taycan converter, a short to ground that in fact came from a monitoring threshold set too low and was cured with new software. Ford rates current inputs as faulty below 4.5 V raw. CARB asks for out-of-range checks of such inputs. The high fault of sensor C is P0EA3.

Likely causes

Sensor C signal shorted to ground
Missing supply voltage of the current sensor
Monitoring threshold in the software set too tight

Symptoms

  • Warning lamp and possibly a stop request
  • Converter switched off or derated
  • 12 V battery discharges while driving

Repair estimate

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

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

Parts involved

dcdc current sensor cwiring harnessdcdc converter

Related codes

P0EA3P0EA0P0EA1P0EA4P0E53P0E9D

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