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 RAM2023PROMASTER 2500REPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTDRIVERS ASSISTANCE SYSTEMS - ADAS(ACTIVE CRUISE CONTROL (ACC) MODULE - ELECTRICAL DIAGNOSTICS)
2023 Dodge and Ram ProMaster 2500
(Active Cruise Control (Acc) Module - Electrical Diagnostics)
2023 Dodge and Ram ProMaster 2500SECTION (Active Cruise Control (Acc) Module - Electrical Diagnostics)
- Diagnostic Code Index
- DTC Troubleshooting
- C1200-16-Battery Voltage - Circuit Voltage Below Threshold
- C1200-17-Battery Voltage - Circuit Voltage Above Threshold
- C1400-86-Master Cylinder Pressure Fault - Signal Invalid
- C1401-86-Wheel Speed Plausibility Failure - Signal Invalid
- C1402-86-Multi Axis Acceleration Sensors From BSM Failure - Signal Invalid
- C1403-86-Electrical Power Steering Failure - Signal Invalid
- C1408-86-ESC (Electronic Stability Control) Fail Status Present - Signal Invalid
- C1409-97-Radar Sensor Blind - Component Or System Operation Obstructed Or Blocked
- C140A-55-Vehicle PROXI Not Configured - Not Configured
- C140E-86-External Temperature Signal From BCM (Body Control Module) - Signal Invalid
- C1411-49-Control Unit - Internal Electronic Failure
- C1411-96-Control Unit - Component Internal Failure
- C1412-54-Calibration Procedure - Missing Calibration
- C1415-53-External Mode - Deactivated
- C1416-87-VIN Message - Missing Message
- C1417-78-Horizontal Misalignment Sensor - Alignment Or Adjustment Incorrect
- C1418-78-Vertical Misalignment Sensor - Alignment Or Adjustment Incorrect
- C1419-64-Internal Wheel Speed Plausibility Failure - Signal PLAUSIBILTY Failure
- C141C-88-Video Camera Private Can Communication Failure - Bus Off
- C141D-47-Ecu Internal Performance (Ecu Microcontroller Internal Reset) - Watchdog Safety MICROCONTROL Failure
- C141E-49-Component Internal Communication Failure - Internal Electronic Failure
- C141F-96-Hardware Reset Failure - Component Internal Failure
- C1420-25-Radar Sensor Blinded (Signal Disturbed) - Signal Shape Waveform Failure
- C1420-66-Radar Sensor Blinded (Signal Disturbed) - Signal Has Too Many Transitions Events
- C1422-49-Internal Hardware Plausibility Check - Internal Electronic Failure
- C1422-66-Internal Hardware Plausibility Check - Signal Has Too Many Transitions Events
- C1423-4B-Sensor Internal Temperature - Over Temperature
- C1424-4B-Component Internal Temperature - Over Temperature
- C1425-45-Flashed Software In Ecu Not Compatible - Program Memory Failure
- C1426-49-Control Unit PERMANET Failure - Internal Electronic FAULURE
- C1428-68-Sensor Blinded (Radar Unavailable) - Event Information
- C1429-66-Radar Sensor High Temperature - Signal Has Too Many Transition Events
- C1429-68-Radar Hardware OVERTEMPERATURE - Event Information
- C1430-86-VIN Plausibility Check Failure - Signal Invalid
- C1431-86-Yaw Rate Acceleration Sensor From BSM Failure - Signal Invalid
- C144A-86-Vehicle Speed Signal Not Valid - Signal Invalid
- U0001-87-C1 Can Bus - Missing Message
- U0001-88-C1 Can Bus - Bus Off
- U1700-87-Body Control Module (BCM) - Missing Message
- U1701-87-Engine Control Module (ECM) - Missing Message
- U1702-87-Electrical Power Steering (EPS) - Missing Message
- U1703-87-Instrument Panel Cluster (IPC) - Missing Message
- U1706-86-Brake System Module (BSM) - Signal Invalid
- U1706-87-Brake System Module (BSM) - Missing Message
- U1930-86-Internal Ignition Working Condition Signal - Signal Invalid
- U1933-87-BCM Command Message From BCM (Body Computer Module) Absent - Missing Message
- U1950-83-IMPLAUSIBILE Data Received From Body Control Module (Can Message BCM_Command Integrity Error) - Value Of Signal Protection Calculation Incorrect
- U1952-83 Implausible Data Received From Brake System Module (Can Message Brake1 Integrity Error) Value Of Signal Protection Calculation Incorrect
- U1958-83-BSM_Yrs_Data (From Brake System Module) - Value Of Signal Protection Calculation Incorrect
- U1958-83-IMPLAUSIBILE Data Received From Brake System Module (Can Message BSM_Yrs_Data Integrity Error) - Value Of Signal Protection Calculation Incorrect
- U1966-83-IMPLAUSIBILE Data Received From Engine Control Module (Can Message GE Integrity Error) - Value Of Signal Protection Calculation Incorrect
- U1982-83-IMPLAUSIBILE Data Received From Brake System Module (Can Message Wheel_Info Integrity Error) - Value Of Signal Protection Calculation Incorrect
- U1984-83-IMPLAUSIBILE Data Received From Brake System Module (Can Message Wheel_Speed Integrity Error) - Value Of Signal Protection Calculation Incorrect
- U198A-83-IMPLAUSIBILE Data Received From Brake System Module (Can Message Brake7 Integrity Error) - Value Of Signal Protection Calculation Incorrect
- 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.