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 MANUALSJEEP2023RENEGADE TRAILHAWKREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCOLLISION/AVOIDANCEACTIVE CRUISE CONTROL (ACC) MODULE - DTCS C1438-86 TO U198-83
2023 Jeep Renegade Trailhawk
Active Cruise Control (Acc) Module - DTCS C1438-86 To U198-83
2023 Jeep Renegade TrailhawkSECTION Active Cruise Control (Acc) Module - DTCS C1438-86 To U198-83
- DTC Troubleshooting
- C1438-86-Gas Pedal Position Signals From ECM (Engine Control Module) Not Valid - Signal Invalid
- C1439-86-Engine Torque Signals From ECM (Engine Control Module) Not Valid - Signal Invalid
- C143A-86-Trailer Tow Module Stop Light Signal From TTM-Trailer Tow Module-Fail-SIGNALINVALID
- C143B-87-Engine 5 Messages-From Engine Control Module-For ADAPTATIVE Cruise Control Function-Missing Message
- C1440-87-Engine 3/4/5 Messages (From Engine Control Module) For Adaptive Cruise Control Function - Missing Message
- C1441-87-Engine7 Message (From Engine Control Module) For Adaptive Cruise Control Function - Missing Message
- C1442-87-TRANSM1 Message (From Dual Clutch Transmission Module) For Adaptive Cruise Control Function - Missing Message
- C1443-87-TRANSM2 Message (From Dual Clutch Transmission Module) For Adaptive Cruise Control Function - Missing Message
- C1445-87-SCCM CRS CTRL Message (From Steering Column Control Module) For Adaptive Cruise Control Function - Missing Message
- C1446-86-Cruise Control Information Fail - Signal Invalid
- C1447-87-Engine10 Message (From Engine Control Module) For Adaptive Cruise Control Function - Missing Message
- C1448-87-Drivetrain1 Message (From Drive Train Control Module) For Adaptive Cruise Control Function - Missing Message
- C1449-29-Signal From SCCM (Steering Control Module) Not Plausible - Signal Invalid
- C144A-86-Vehicle Speed Signal Not Valid - Signal Invalid
- C144B-24-Acc (Adaptive Cruise Control) Function Button Stuck - Signal Stuck High
- C144D-86-Engine Torque Request Not Plausible - Signal Invalid
- C144E-86-Eld Signal Fail From BSM (Brake System Module) - Signal Invalid
- C144F-86-Signal LIMPHOME Status Active From DCTM (Dual Clutch Transmission Module) Not Valid - Signal Invalid
- C1450-86-Engine Speed Signal Fail From ECM (Engine Control Module) - Signal Invalid
- C1451-86-Acc (Adaptive Cruise Control) Safe - Signal Invalid
- C1452-86-Engine Torque DAS - Signal Invalid
- C1453-86-Acc (Adaptive Cruise Control) Intervention Signals Not Plausible - Signal Invalid
- C1454-86-Signal Failure From LBSS-Left Blind Spot Sensor-Signal Invalid
- C1455-86-Signal Failure From RBSS-Right Blind Spot Sensor-Signal Invalid
- C1456-86-Signal Actual Gear Acc From ECM-Engine Control Module-Not Valid-Signal Invalid
- C1457-87-MOTTRANSM 3 Message-From Engine Control Module-For ADAPTATIVE Cruise Control Function-Missing Message
- C1458-87-Blind Spot Information Not Received From BCM-Body Computer Module-Missing Message
- C1459-86-Signal Brake Travel Status From BSM (Brake System Module) Not Valid - Signal Invalid
- C150B-87-Engine 15 Message (From Engine Control Module) For ADAPTATIVE Cruise Control Function - Missing Message
- C150C-86-Shift Lever Position Signal From DCTM (Dual Clutch Transmission Module) - Signal Invalid
- U0001-87-C1 Can Bus-Missing Message
- U0001-88-C1 Can Bus-Bus Off
- U1700-87-Body Control Module (BCM) - Missing Message
- U1701-86-Engine Control Module (ECM) - Signal Invalid
- U1701-87-Engine Control Module (ECM) - Missing Message
- U1702-87-Electric 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
- U1726-87-Airbag System - Missing Message
- U1763-87-Trailer Tow Module (TTM) - Missing Message
- U1930-86-Internal Ignition Working Condition Signal - Signal Invalid
- U1932-86-Ignition Working Condition From BCM (Body Computer Module) Not Valid - Signal Invalid
- U1933-87-BCM Command Message From BCM (Body Computer Module) Absent - Missing Message
- U1934-87-Lost Communication With BCM (Can Messages BCM_Command And Body2 Missing From Body Control Module) - 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-IMPLAUSIBILE Data Received From Brake System Module (Can Message Brake1 Integrity Error) - 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
- U195C-83-IMPLAUSIBILE Data Received From Drive Train Control Module-Can Message Drivetrain1 Integrity Error-Value Of Signal Protection Calculation Incorrect
- U1960-83-IMPLAUSIBILE Data Received From Engine Control Module (Can Message Engine1 Integrity Error) - Value Of Signal Protection Calculation Incorrect
- U1962-83-IMPLAUSIBILE Data Received From Engine Control Module-Can Message Engine3 Integrity Error-Value Of Signal Protection Calculation Incorrect
- U1966-83-IMPLAUSIBILE Data Received From Electrical Power Steering (Can Message GE Integrity Error) - Value Of Signal Protection Calculation Incorrect
- U1970-83-IMPLAUSIBILE Data Received From Engine Control Module (Can Message TRANSM3 Integrity Error) - Value Of Signal Protection Calculation Incorrect
- U1978-83-IMPLAUSIBILE Data Received From Brake System Module (Can Message Status_EPB) - Value Of Signal Protection Calculation Incorrect
- U197A-83-IMPLAUSIBILE Data Received From Dual Clutch Transmission Module (Can Message TRANSM1) - Value Of Signal Protection Calculation Incorrect
- U197C-83-IMPLAUSIBILE Data Received From Dual Clutch Transmission Module (Can Message TRANSM2) - 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
- U1986-83-IMPLAUSIBILE Data Received From Steering Column Control Module (Can Message SCCM_CRS_CTRL) - 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
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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.