Powertrain, generic

P0EA1 DC/DC Converter Current Sensor C Circuit Range/Performance

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

P0EA1 stands for a sensor C current reading that is electrically plausible yet disagrees with the converter's operating point or with its sister channels. If a converter measures several phase currents, those values should track each other, and one channel that deviates is a typical trigger. No manufacturer documents P0EA1 publicly. Ford's P0A94 test illustrates the approach for the boost converter of its hybrids: a deviation of over 50 A between measured and calculated inductor current, held for more than 4 s, counts as a fault. FCA shows how makers adjust such checks, turning the sensor A rationality code P0E52 into a one-trip fault for the Ram 1500 eTorque with flash 08-037-21. Hard circuit faults of sensor C use P0EA0, P0EA2 and P0EA3.

Likely causes

Sensor C channel drifting away from the other channels
Fault in the converter phase measured by sensor C
Plausibility software in need of an update

Symptoms

  • MIL, possibly after one trip
  • Reduced 12 V charging current
  • Converter or drive power derated

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€60–3,000
Time0.3–5 h

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

Parts involved

dcdc current sensor cdcdc converterwiring harness

Related codes

P0EA0P0EA2P0EA3P0EA4P0E52P0E9C

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