Body, generic

B012B DC/AC Converter A High Voltage Power Outlet "E" Circuit/Open

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

B012B is the last outlet circuit code, for outlet E. Many trucks combine bed sockets with one in the cabin. Ford's SSM 49562 for the 2021 F-150 with the 7.2 kW system notes that a message about a tripped bed-panel breaker could really come from the breaker above the 120 V outlet in the instrument panel, or from that outlet's connector not being fully plugged in; an over-the-air update corrected the wording. Ford's patent US11043801B2 also lets each socket be switched on its own from the screen or a button. Which outlet E is remains unpublished, and B012B appears in no manufacturer document. Before blaming the converter, check breaker, connector and socket of the outlet concerned.

Likely causes

Connector at outlet E not fully engaged, e.g. after dash work
Circuit breaker of outlet E tripped or defective
Wiring between converter and outlet E open

Symptoms

  • Socket E dead, possibly with a misleading breaker message for another outlet
  • Outlet circuits carry 120/240 V AC from a high-voltage source; work only with the system de-energised

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€40–800
Time0.5–3 h

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

Parts involved

dc ac converter ahv outlet e

Related codes

B0127B0128B0129B012AB012C

References: static.nhtsa.gov, patents.google.com.