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.
2024 Jeep Gladiator Sport S, Full Time T/Case Control, Standard TransFACTORY OEM SERVICE PROCEDURE
3.6L (GPEC 5) - DTCS U11DE To U1412
- DTC Troubleshooting
- U11DE Lost Speed Control Message
- U120C Lost Brake Booster Signal
- U120D Lost Rolls Mode Signal
- U12A8 Lost Communication With Master Cylinder Pressure Sensor
- U1409 Implausible Left Front Wheel Speed Signal Received
- Description And Operation - Braking Systems
- Component Functional Description - 3 Wire 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
- U140A Implausible Right Front Wheel Speed Signal Received
- Description And Operation - Braking Systems
- Component Functional Description - 3 Wire 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
- U140B Implausible Left Rear Wheel Speed Signal Received
- Description And Operation - Braking Systems
- Component Functional Description - 3 Wire 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
- U140C Implausible Right Rear Wheel Speed Signal Received
- Description And Operation - Braking Systems
- Component Functional Description - 3 Wire 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
- U1412 Implausible Vehicle Speed Signal Received
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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