Body, generic

B012A DC/AC Converter A High Voltage Power Outlet "D" Circuit/Open

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

B012A concerns outlet D. Sockets in a pickup bed live in a harsher place than those in the cab: dust, rain, washing and cords left plugged in. Ford's customer satisfaction program 21B52 shows how tightly bed outlets are tied into the vehicle: on certain 2021 F-150 Raptor trucks with Pro Power Onboard, a bed outlet cover standing open more than about 17 degrees kept the truck from shifting out of Park until the PCM was reprogrammed. In Ford's patent US11043801B2 the bed outlet carries several sockets, each with its own switch and protection, and a second outlet sits in the cab. Whether D is a bed socket is not published, and no manufacturer documents B012A. Moisture in the socket or its connector is a likely cause.

Likely causes

Water or corrosion in socket D or its connector, typical for exterior or bed outlets
Harness to outlet D chafed or crushed in the body or bed
Socket insert mechanically damaged

Symptoms

  • Socket D without power, other sockets may work
  • Message that onboard power or an outlet is unavailable
  • 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€60–800
Time0.5–3 h

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

Parts involved

dc ac converter ahv outlet d

Related codes

B0127B0128B0129B012BB012C

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