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.
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HOMESERVICE MANUALSDODGE AND RAM20241500 TRXREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 220 ((TRAILER CAN GATEWAY MODULE (TCGWM) - ELECTRICAL DIAGNOSTICS - 1500))DIAGNOSTIC CODE INDEX
2024 Dodge and Ram 1500 TRX
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 |
|---|---|
| C221C-00 | ECU NOT PROGRAMMED/FLASH REQUIRED |
| B2199-14 | BATTERY VOLTAGE-CIRCUIT SHORT TO GROUND OR OPEN |
| B2199-16 | BATTERY VOLTAGE-CIRCUIT VOLTAGE BELOW THRESHOLD |
| B2199-17 | BATTERY VOLTAGE-CIRCUIT VOLTAGE ABOVE THRESHOLD |
| B2199-49 | BATTERY VOLTAGE-INTERNAL ELECTRONIC FAILURE |
| B235A-00 | ECU IN-PLANT MODE |
| U0001-00 | CAN C BUS |
| U0002-00 | U0002-00 CAN C1 BUS OFF PERFORMANCE |
| U0011-00 | CAN INTERIOR BUS OFF PERFORMANCE |
| U0019-00 | CAN B BUS |
| U0020-00 | CAN B BUS OFF PERFORMANCE |
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.