B012D code meaning
DC/AC Converter A High Voltage Power Outlet Control Module "B"
What B012D means
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 tire 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 Which unit module B is remains unpublished; no maker documents B012D.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.
B012D at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyWorkshop only
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of B012D
- Outlets switch off or are unavailable
- Side effects on radio-based systems such as tire pressure monitoring
- Module handles 120/240 V AC from a high-voltage source; work only with the system de-energised
Common causes of B012D
- Most likelySupply voltage outside the permitted window, weak 12 V battery or poor ground
- PossibleModule B overheating, blocked air path or cooling fan failed
- Less likelyModule B internally defective or emitting interference
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Hv outlet module bDc ac converter module a
What each part of B012D means
| B | Body system: airbags, seat belts, power seats, lights and climate control. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 2D | The exact fault in that area. |
What to do next
- Note B012D and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about B012D
What does B012D mean?
B012D means "DC/AC Converter A High Voltage Power Outlet Control Module "B"". B012D addresses outlet control module B. It is a generic code, so it means the same on every make.
Is it safe to drive with B012D?
B012D does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will B012D fail an emissions test?
B012D is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is B012D to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will B012D clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.