Reference meaning
What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Narrow by vehicle
A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Scan worksheet →Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
U3003:16POWER LIFTGATE CONTACTS GARAGE CEILING
U3003Battery Voltage
U3003Battery Voltage
Manufacturer communications
31Original wording in English
FORD, LINCOLN
Some 2025-2026 Explorer/Aviator vehicles may exhibit a no crank/no start/discharged battery condition with diagnostic trouble codes (DTC) B144D:29, B144E:29, B1555:29, B1556:29 and/or U3003:16 stored in the rear gate trunk module (RGTM). The power liftgate may also be inoperative. This may be due to water intrusion into the left…
MAZDA
DESCRIPTION Some vehicles may experience one or more of the following DTCs with the Hybrid system warning light on. This may be caused by an issue with the sub battery located under the passenger floor. P143B Backup power supply system: Sub battery power supply low input. • U3008:01 BPS Backup power supply unit input/output circ…
FORD
Some 2023-2024 F-150 non-hybrid/non-Lightning vehicles built on or after 01-Mar-2023 may exhibit an illuminated battery malfunction indicator and/or illuminated ABS malfunction indicator which may be accompanied by a Check Brake System message and/or 12V Battery State Of Charge Low message in the instrument panel cluster (IPC) w…
FORD, LINCOLN
Some 2020-2023 Escape, 2021-2023 Corsair vehicles equipped with 2.5L engine full hybrid electric vehicle (FHEV) and plug-in hybrid electric vehicle (PHEV) powertrain and 2022-2023 Maverick vehicles equipped with 2.5L engine FHEV powertrain may exhibit a condition where the 12V battery voltage is low or discharged with diagnostic…
Check vehicle applicability
126A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Ford | C-MAX ↗ | 2017 |
| Ford | C-MAX ↗ | 2016 |
| Ford | ESCAPE ↗ | 2021 |
| Ford | ESCAPE ↗ | 2020 |
| Ford | ESCAPE HYBRID ↗ | 2023 |
| Ford | ESCAPE HYBRID ↗ | 2022 |
| Ford | ESCAPE HYBRID ↗ | 2021 |
| Ford | ESCAPE HYBRID ↗ | 2020 |
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.