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.
C2129-00Battery Voltage
C2129-00Battery Voltage
Manufacturer communications
11Original wording in English
RAM
Unable To Start Vehicle - Shifter Inoperable Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● B2199-16 - Battery Voltage-circuit Voltage Below Threshold. ● B21DD-84 - System Voltage-signal Below Allowable Ran…
RAM
Unable To Start Vehicle - Shifter Inoperable Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● B2199-16 - Battery Voltage-circuit Voltage Below Threshold. ● B21DD-84 - System Voltage-signal Below Allowable Ran…
RAM
Service Electric Power Steering Message, C1592-01, C2217-49, C2129-16 Diagnostic Trouble Codes (DTCs)
JEEP
12V Battery Low Charge This bulletin involves testing and possibly replacing the 12V battery. Technicians or customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set: U3007-00 - Cont…
Check vehicle applicability
9A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Jeep | WRANGLER ↗ | 2021 |
| Ram | 1500 ↗ | 2025 |
| Ram | 1500 ↗ | 2021 |
| Ram | 1500 ↗ | 2020 |
| Ram | 1500 ↗ | 2019 |
| Ram | PROMASTER ↗ | 2025 |
| Ram | PROMASTER ↗ | 2024 |
| Ram | PROMASTER ↗ | 2023 |
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.