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 RAM20232500 HD POWER WAGONREPAIR AND DIAGNOSISTRANSMISSIONTRANSFER CASE(DRIVETRAIN CONTROL MODULE (DTCM) - ELECTRICAL DIAGNOSTICS)
2023 Dodge and Ram 2500 HD Power Wagon
(Drivetrain Control Module (DTCM) - Electrical Diagnostics)
2023 Dodge and Ram 2500 HD Power WagonSECTION (Drivetrain Control Module (DTCM) - Electrical Diagnostics)
- Diagnostic Code Index
- DTC Troubleshooting
- C1078 Tire Revolutions Range Performance
- C1404 Transfer Case Range Position Sensor Circuit Low
- C1405 Transfer Case Range Position Sensor Circuit High
- C140A Transfer Case Motor Performance
- C140D Transfer Case Motor Control Circuit Open
- C140E Transfer Case Motor Blocked
- C1456-AWD Clutch Power Control Circuit Low
- C1457-AWD Clutch Power Control Circuit High
- C1464 Front Axle Disconnect Control Circuit Low
- C1465 Front Axle Disconnect Control Circuit High
- C1477 Transfer Case Clutch Over Temperature
- C147B Front Axle Disconnect Sensor Circuit Performance
- C1480 Transfer Case Range Digital Position Sensor Performance
- C2100 Battery Voltage Low
- C2101 Battery Voltage High
- C2111 Sensor Supply 1 Voltage Circuit Low
- C2112 Sensor Supply 1 Voltage Circuit High
- C2201 FDCM/DTCM Internal
- U0001-00 Can C 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 Lost Communication With Body Control Module
- U0212-00 Lost Communication With SCM
- U0401 Implausible Data Received From ECM/Pcm
- U0402 Implausible Data Received From TCM
- U0415 Implausible Data Received From Abs
- U0422 Implausible Data Received From Body Control Module
- U0429 Implausible Data Received From Steering Control Module
- Standard Procedure
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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.