Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Diagnostic Code Index
2024 Dodge and Ram 1500 TRXSECTION Diagnostic Code Index
WARNING: This page is about a different car, the 2023 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC CODE INDEX
| DTC | Description |
|---|---|
| B2199-16 | BATTERY VOLTAGE - CIRCUIT VOLTAGE BELOW THRESHOLD |
| B2199-17 | BATTERY VOLTAGE - CIRCUIT VOLTAGE ABOVE THRESHOLD |
| B21DD-84 | SYSTEM VOLTAGE - SIGNAL BELOW ALLOWABLE RANGE |
| B21DD-85 | SYSTEM VOLTAGE - SIGNAL ABOVE ALLOWABLE RANGE |
| B22A9-00 | ECU INTERNAL PERFORMANCE |
| B2840-87 | LEFT HEADLAMP SWIVELING CONTROL - MISSING MESSAGE |
| B2841-87 | RIGHT HEADLAMP SWIVELING CONTROL - MISSING MESSAGE |
| B286A-01 | LEFT HEADLAMP SWIVELING MOTOR - GENERAL ELECTRICAL FAILURE |
| B286A-2A | LEFT HEADLAMP SWIVELING MOTOR - STUCK |
| B2876-01 | RIGHT HEADLAMP SWIVELING MOTOR - GENERAL ELECTRICAL FAILURE |
| B2876-2A | RIGHT HEADLAMP SWIVELING MOTOR - STUCK |
| B287E-16 | LEFT HEADLAMP MODULE - CIRCUIT VOLTAGE BELOW THRESHOLD |
| B287E-17 | LEFT HEADLAMP MODULE - CIRCUIT VOLTAGE ABOVE THRESHOLD |
| B287F-16 | RIGHT HEADLAMP MODULE - CIRCUIT VOLTAGE BELOW THRESHOLD |
| B287F-17 | RIGHT HEADLAMP MODULE - CIRCUIT VOLTAGE ABOVE THRESHOLD |
| U0037-00 | LIN BUS |
| U0100-00 | LOST COMMUNICATION WITH ECM/PCM |
| U0101-00 | LOST COMMUNICATION WITH TCM |
| U0121-00 | LOST COMMUNICATION WITH ANTI-LOCK BRAKE SYSTEM (ABS) CONTROL MODULE |
| U0140-00 | LOST COMMUNICATION WITH BODY CONTROL MODULE |
| U0155-00 | LOST COMMUNICATION WITH CLUSTER-CCN |
| U0212-00 | LOST COMMUNICATION WITH STEERING COLUMN CONTROL MODULE |
| U0401-00 | IMPLAUSIBLE DATA RECEIVED FROM ECM/PCM |
| U0402-00 | IMPLAUSIBLE DATA RECEIVED FROM TCM |
| U0415-00 | IMPLAUSIBLE DATA RECEIVED FROM ABS |
| U0422-00 | IMPLAUSIBLE DATA RECEIVED FROM BODY CONTROL MODULE |
| U0423-00 | IMPLAUSIBLE DATA RECEIVED FROM CLUSTER-CCN |
| U0429-00 | IMPLAUSIBLE DATA RECEIVED FROM STEERING COLUMN CONTROL MODULE |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.