Body, generic

B012D DC/AC Converter A High Voltage Power Outlet Control Module "B"

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

B012D addresses outlet control module B. A converter for household sockets interacts with the rest of the vehicle both electrically and by radio. Ford's TSB 23-2218 for 2021–2023 F-150 with the DCACA inverter shows radio-frequency interference from the inverter upsetting the tyre pressure system, so the BCM stores B124D and lights the TPMS lamp; the procedure confirms the inverter as source and suppresses the interference. Toyota Industries' patent US10050558B2 describes a 12 V-fed inverter that only runs between about 11 and 16 V and shuts down on overvoltage or when its power devices overheat. Which unit module B is remains unpublished; no maker documents B012D. Supply, ground and data lines come before a new module.

Likely causes

Supply voltage outside the permitted window, weak 12 V battery or poor ground
Module B overheating, blocked air path or cooling fan failed
Module B internally defective or emitting interference

Symptoms

  • Outlets switch off or are unavailable
  • Side effects on radio-based systems such as tyre pressure monitoring
  • Module handles 120/240 V AC from a high-voltage source; work only with the system de-energised

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€100–2,500
Time0.5–3 h

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

Parts involved

hv outlet module bdc ac converter module a

Related codes

B012CB012EP2EA7P2EA8P2EA9

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