U012D
1 owner report and 8 manufacturer filings across 6 model years from Ford, Honda, Jeep.
Where U012D shows up
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports | Parts |
|---|---|---|---|---|
| 2021 Ford Bronco Sport | Power Train | 2 | — | |
| 2022 Ford Maverick | Electrical System | 2 | — | Battery → |
| 2019 Jeep Renegade | Equipment Adaptive/Mobility | 2 | — | |
| 2025 Ford Ranger | Power Train | 1 | — | |
| 2024 Ford Ranger | Power Train | 1 | — | |
| 2020 Honda Insight | Electrical System | — | 1 | Battery → |
A model year appears here because the code is named in its record, not because every one of these vehicles sets it. Counts are mentions in the federal files, not failure rates — nobody publishes the denominator.
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What it gets filed under
What owners said
Source: NHTSA complaint databaseOwners’ own words, one per nameplate, scrubbed of anything identifying. These are unverified reports filed with NHTSA — they are what was said, not a finding that it was true.
Engine permanent codes U0111 U012D U0110 U12A5 U1206 U1205 Anti lock brakes permanent codes U040168 CAN Gateway Permanent codes U0029-00 Electric power train traction motor control module permanent code U1204 U12A5 U1205 U0100 U012D U1206…
8 manufacturer filings name U012D. Start with what the maker wrote down.
A code names the test that failed, not the part. A bulletin that names it is often a diagnosis someone has already written down — quote its number at the service desk.
Manufacturer filings that name it
Source: NHTSA manufacturer communicationsService bulletins and campaigns whose filed summary names U012D.
- SSM 53979 Service bulletin2025-06-25 · Power Train
- Some 2024-2025 Ranger vehicles may exhibit a "Check Charging System" message displayed in the instrument panel cluster (IPC) with diagnostic trouble codes (DTC) U012D, U0284, and/or U042E stored in the powertrain control module (PCM). This may be due to corrosion found in the active grille shutter lower connector (C1767). If no corrosion is found in this connector, refer to the Workshop Manual (WS
- SSM 50993 Service bulletin2022-08-03 · Electrical System
- Some 2022 Maverick vehicles built on or before 4-Apr-2022 equipped with 2.0L engine may exhibit a charging system warning indicator with diagnostic trouble codes (DTCs) U012D, U0284 and/or U042E stored in the powertrain control module (PCM). The vehicle may also exhibit a malfunction indicator lamp (MIL) with DTCs P0036:00 and/or P0138:00 stored in the PCM. This may be caused by water intrusion in
- SSM 50973 Service bulletin2022-07-29 · Electrical System
- Some 2022 Maverick vehicles built on or before 4-Apr-2022 equipped with 2.0L engine may exhibit a charging system warning indicator with diagnostic trouble codes (DTCs) U012D, U0284 and/or U042E stored in the powertrain control module (PCM). The vehicle may also exhibit a malfunction indicator lamp (MIL) with DTCs P0036:00 and/or P0138:00 stored in the PCM. This may be caused by water intrusion in
- SSM 49976 Service bulletin2021-07-23 · Electrical System
- Some 2021 Bronco Sport equipped with a 1.5L EcoBoost engine built on or before 26-Jan-2021 may exhibit a Check Charging System message and/or illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTC) U012D, U0284 and/or U042E. This may be caused by water intrusion into connector C202. Prior to performing Workshop Manual (WSM) diagnostics, inspect the C202 connector for signs
- SSM 49496 Service bulletin2021-01-27 · Power Train
- Some 2021 Bronco Sport equipped with a 1.5L EcoBoost engine may exhibit a Check Charging System message and/or illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTCs) U012D, U0284,and/or U042E. This may be caused by water intrusion into connector C202. Prior to performing Workshop Manual (WSM) diagnostics, inspect the C202 connector for signs of corrosion or water residue
- S2008000116 Service bulletin2020-08-08 · Structure — Body — Bumpers — Active Shutters/Grill
- Active Grill Shutter Inline Connector Is Exposed On Vehicles Not Equipped. DTC?s U012D, U02A9, P023B, U2005-87, And B2206-00 Are Set
What U012D means
Source: SAE J2012 / OBD-IIU012D sits in the generic range of the OBD-II standard, so it means the same thing on every vehicle sold in the United States — but WhichTrim does not carry a definition for it and will not invent one. What is on this page is the record: who named it and on what.
A stored code names the test that failed, never the part that caused it. It is the starting point of a diagnosis, not its conclusion — the same code has several possible causes and the cheap one is not always right.
Common questions about U012D
Source: NHTSA files and the OBD-II standardCan I keep driving with U012D stored?
Nobody can answer that from the code alone, and a site that does is guessing. A steady light means a fault was logged and the car should be checked soon; a flashing light means a severe misfire — slow down and get it seen as soon as possible, because severe misfire can quickly damage the catalytic converter. The safe read of this page is the mileage and the components, not permission.
Does a code mean the car is recalled?
No. Recalls are filed by campaign and matched by VIN, and none of them are triggered by a scan tool. If you want to know whether an open recall applies to one specific vehicle, check the VIN at nhtsa.gov/recalls — that is the only source that settles it.
Why do the counts here differ from other sites?
Because these are not estimates. Every number on this page is a count of documents in NHTSA's own files: manufacturer communications that name the code in their filed summary, and owner complaints that name it in the narrative. We do not model, weight or extrapolate them.
Will clearing the code fix it?
Clearing turns the light off and erases the freeze-frame data a technician would have used to work out what happened. If the condition is still there the code returns, usually within a few drive cycles, and the diagnosis now starts from less information than before.