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 3500 2D CAB CHASSISREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSIS3.6L - DTCS U0404 TO U140A
2023 Dodge and Ram ProMaster 3500 2D Cab Chassis
3.6L - DTCS U0404 To U140A
2023 Dodge and Ram ProMaster 3500 2D Cab ChassisSECTION 3.6L - DTCS U0404 To U140A
- DTC Troubleshooting
- U0404-Implausible Data Received From ESM
- U0405-Implausible Data Received From Cruise Control Module
- U0416-Implausible Data Received From Esp
- U0418-Implausible Data Received From Brake System Control Module 1
- Notes
- Description And Operation-Braking Systems
- Component Functional Description - Brake Pedal Position Sensor
- Component Functional Description - Hydraulic Control Unit (HCU) Assembly
- Component Functional Description - Wheel Speed Sensors
- Component Functional Description - Steering Angle Sensor
- Component Functional Description - Brake System Control Module (BSCM)
- Technical Data-Braking System Messages
- When Monitored
- Set Condition
- Default Action
- Possible Causes
- Diagnostic Overview
- Check For An Active Or Intermittent Condition
- Diagnostic Test - Non-EBOOSTER Brake System - Pcm
- Diagnostic Test-Wheel Speed Sensor Faults
- U0422-Implausible Data Received From Body Control Module
- U0426-Invalid Data Received From Vehicle Immobilizer Control Module
- U0427-Invalid Data Received From Vehicle Security Control Module
- U0428-Implausible Data Received From Steering Angle Sensor
- U0432-Invalid Data Received From Multi-Axis Acceleration Sensor Module
- U110A-Loss Of Communications With SCM - Can C
- U110C-Lost Fuel Level Message
- U110E-Lost Ambient Temperature Message
- U110F-Lost Fuel Volume Message
- U1110-Lost Vehicle Speed Message
- U1120-Lost Wheel Distance Message
- U1186-Lost Communication With Adaptive Cruise Control Module
- U11BC-Lost Brake Switch Message
- U11C2-Lost Transmission Message
- U11DE-Lost Speed Control Message
- U120C-Lost Brake Booster Signal
- U12A8-Lost Communication With Master Cylinder Pressure Sensor
- U1409-Implausible Left Front Wheel Speed Signal Received
- Notes
- Theory Of Operation-Braking Systems
- Component Functional Description - Brake Pedal Position Sensor
- Component Functional Description - Hydraulic Control Unit (HCU) Assembly
- Component Functional Description - Wheel Speed Sensors
- Component Functional Description - Steering Angle Sensor
- Component Functional Description - Anti-Lock Brake System Control Module (Abs)
- Technical Data-Braking System Messages
- When Monitored
- Set Condition
- Default Action
- Possible Causes
- Diagnostic Overview
- Check For An Active Or Intermittent Condition
- Diagnostic Test - Non-EBOOSTER Brake System - Pcm
- Diagnostic Test-Wheel Speed Sensor Faults
- U140A-Implausible Right Front Wheel Speed Signal Received
- Notes
- Theory Of Operation-Braking Systems
- Component Functional Description - Brake Pedal Position Sensor
- Component Functional Description - Hydraulic Control Unit (HCU) Assembly
- Component Functional Description - Wheel Speed Sensors
- Component Functional Description - Steering Angle Sensor
- Component Functional Description - Anti-Lock Brake System Control Module (Abs)
- Technical Data-Braking System Messages
- When Monitored
- Set Condition
- Default Action
- Possible Causes
- Diagnostic Overview
- Check For An Active Or Intermittent Condition
- Diagnostic Test - Non-EBOOSTER Brake System - Pcm
- Diagnostic Test-Wheel Speed Sensor Faults
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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.