Powertrain, generic

P0EA5 DC/DC Converter B Performance

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modeNo

P0EA5 says that a second DC/DC converter, B, does not deliver what it is asked to, for example the commanded output voltage or current, although its sensors give no circuit fault. FCA documents it as DC/DC Converter 2 Performance for the 2019 Jeep Cherokee (KL) with the 3.2 litre V6 and engine start/stop: PCM flash bulletins 18-023-19 REV. B and 18-077-22 list it with P0EA6 and with communication codes for converter control modules A and B, alongside restart problems after a stop phase. The fix there is new PCM software, done with a charger keeping the battery between 13.2 and 13.5 V. Ford's equivalent test for converter A (P0A94) compares calculated and measured current, 50 A for 4 s. Overheating of converter B is P0EA6.

Likely causes

Engine or powertrain control software needing an update
Internal fault of converter B
Poor supply or ground connection of converter B

Symptoms

  • MIL on
  • Engine does not restart after an auto-stop, start-stop disabled
  • Voltage dips in the 12 V network, for example audio dropouts

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€50–1,200
Time0.3–3 h

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

Parts involved

dcdc converter bengine control modulewiring harness

Related codes

P0A94P0EA6P0D32P0CA2

References: static.nhtsa.gov, static.nhtsa.gov, fordservicecontent.com.