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.
2021 Jeep Compass TrailhawkFACTORY OEM SERVICE PROCEDURE
Module, Global Telematics Box
DIAGNOSTIC CODE INDEX
| DTC | Description |
|---|---|
| B1401-11 | EMERGENCY CALL SPEAKER-CIRCUIT SHORT TO GROUND |
| B1401-12 | EMERGENCY CALL SPEAKER-CIRCUIT SHORT TO BATTERY |
| B1401-13 | EMERGENCY CALL SPEAKER-CIRCUIT OPEN |
| B1401-2B | EMERGENCY CALL SPEAKER-WIRES SHORTED TOGETHER |
| B143A-11 | MICROPHONE 1-CIRCUIT SHORT TO GROUND |
| B143A-12 | MICROPHONE 1-CIRCUIT SHORT TO BATTERY |
| B143A-13 | MICROPHONE 1-CIRCUIT OPEN |
| B143A-2B | MICROPHONE 1-WIRES SHORTED TOGETHER |
| B143D-11 | MICROPHONE 2 - CIRCUIT SHORT TO GROUND |
| B143D-12 | MICROPHONE 2 - CIRCUIT SHORT TO BATTERY |
| B143D-13 | MICROPHONE 2 - CIRCUIT OPEN |
| B143D-2B | MICROPHONE 2 - WIRES SHORTED TOGETHER |
| B1552-11 | EMERGENCY CALL BUTTON-CIRCUIT SHORT TO GROUND |
| B1552-15 | EMERGENCY CALL BUTTON-CIRCUIT SHORT TO BATTERY OR OPEN |
| B1552-2A | EMERGENCY CALL BUTTON-STUCK |
| B1553-11 | ROAD ASSIST CALL BUTTON-CIRCUIT SHORT TO GROUND |
| B1553-15 | ROAD ASSIST CALL BUTTON-CIRCUIT SHORT TO BATTERY OR OPEN |
| B1553-2A | ROAD ASSIST BUTTON - STUCK |
| B1555-11 | EMERGENCY CALL BUTTON BACKLIGHT LED CONTROL-CIRCUIT SHORT TO GROUND |
| B1555-15 | EMERGENCY CALL BUTTON BACKLIGHT LED CONTROL-CIRCUIT SHORT TO BATTERY OR OPEN |
| B1556-11 | RED EMERGENCY CALL LED CONTROL-CIRCUIT SHORT TO GROUND |
| B1556-15 | RED EMERGENCY CALL LED CONTROL-CIRCUIT SHORT TO BATTERY OR OPEN |
| B1557-11 | GREEN EMERGENCY CALL LED CONTROL-CIRCUIT SHORT TO GROUND |
| B1557-15 | GREEN EMERGENCY CALL LED CONTROL-CIRCUIT SHORT TO BATTERY OR OPEN |
| B1560-11 | CELLULAR ANTENNA 1-CIRCUIT SHORT TO GROUND |
| B1560-13 | CELLULAR ANTENNA 1-CIRCUIT OPEN |
| B1561-11 | CELLULAR ANTENNA 2-CIRCUIT SHORT TO GROUND |
| B1561-13 | CELLULAR ANTENNA 2-CIRCUIT OPEN |
| B1562-14 | GPS ANTENNA-CIRCUIT SHORT TO GROUND OR OPEN |
| B1565-11 | RED ROAD ASSIST CALL LED CONTROL CIRCUIT SHORT TO GROUND |
| B1565-15 | RED ROAD ASSIST CALL LED CONTROL CIRCUIT SHORT TO BATTERY OR OPEN |
| B1566-11 | GREEN ROAD ASSIST CALL LED CONTROL CIRCUIT SHORT TO GROUND |
| B1566-15 | GREEN ROAD ASSIST CALL LED CONTROL CIRCUIT SHORT TO BATTERY OR OPEN |
| B1569-11 | RED ROAD ASSIST CALL LED CONTROL-CIRCUIT SHORT TO GROUND |
| B1569-15 | RED ROAD ASSIST CALL LED CONTROL-CIRCUIT SHORT TO BATTERY OR OPEN |
| B156A-11 | GREEN ROAD ASSIST CALL LED CONTROL-CIRCUIT SHORT TO GROUND |
| B156A-15 | GREEN ROAD ASSIST CALL LED CONTROL-CIRCUIT SHORT TO BATTERY OR OPEN |
| B1570-93 | USB COMMUNICATION-NO OPERATION |
| B1E21-16 | BACKUP BATTERY-CIRCUIT VOLTAGE BELOW THRESHOLD |
| B1E21-96 | BACKUP BATTERY-COMPONENT INTERNAL FAILURE |
| B210D-16 | BATTERY VOLTAGE LOW-CIRCUIT VOLTAGE BELOW THRESHOLD |
| B210E-17 | BATTERY VOLTAGE HIGH-CIRCUIT VOLTAGE ABOVE THRESHOLD |
| B2206-00 | CURRENT VIN MISSING-MISMATCH |
| B222C-00 | VEHICLE CONFIGURATION NOT PROGRAMMED |
| B22A9-96 | ECU INTERNAL PERFORMANCE-COMPONENT INTERNAL FAILURE |
| B273C-87 | DIGITAL CRASH INPUT-MISSING MESSAGE |
| U0001-00 | CAN C BUS |
| U0002-00 | CAN C BUS OFF PERFORMANCE |
| U0010-00 | CAN INTERIOR BUS |
| U0011-00 | CAN INTERIOR BUS OFF PERFORMANCE |
| U0100-00 | LOST COMMUNICATION WITH ECM/PCM "A" |
| U0129-00 | LOST COMMUNICATION WITH BRAKE SYSTEM CONTROL MODULE |
| U0140-00 | LOST COMMUNICATION WITH BODY CONTROL MODULE |
| U0151-00 | LOST COMMUNICATION WITH OCCUPANT RESTRAINT CONTROLLER (ORC) |
| U0155-00 | LOST COMMUNICATION WITH CLUSTER-CCN |
| U0184-00 | LOST COMMUNICATION WITH RADIO |
| U0401-86 | IMPLAUSIBLE DATA RECEIVED FROM ECM/PCM "A"-SIGNAL INVALID |
| U0418-64 | IMPLAUSIBLE DATA RECEIVED FROM BRAKE SYSTEM CONTROL MODULE 1-SIGNAL PLAUSIBILITY FAILURE |
| U0418-86 | IMPLAUSIBLE DATA RECEIVED FROM BRAKE SYSTEM CONTROL MODULE 1-SIGNAL INVALID |
| U0422-86 | IMPLAUSIBLE DATA RECEIVED FROM BODY CONTROL MODULE-SIGNAL INVALID |
| U0423-86 | IMPLAUSIBLE DATA RECEIVED FROM CLUSTER/CCN-SIGNAL INVALID |
| U0452-64 | IMPLAUSIBLE DATA RECEIVED FROM RESTRAINTS CONTROL MODULE-SIGNAL PLAUSIBILITY FAILURE |
| U0452-86 | IMPLAUSIBLE DATA RECEIVED FROM RESTRAINTS CONTROL MODULE-SIGNAL INVALID |
| U0485-64 | IMPLAUSIBLE DATA RECEIVED FROM RADIO-SIGNAL PLAUSIBILITY FAILURE |
| U0485-86 | IMPLAUSIBLE DATA RECEIVED FROM RADIO-SIGNAL INVALID |
| U1930-86 | ECU OPERATIONAL MODE STATUS INTERNAL SIGNAL SIGNAL INVALID |
| U1933-87 | LOST COMMUNICATION WITH BCM (CAN MESSAGE STATUS BH_BCM1 MISSING FROM BODY CONTROL MODULE) MISSING MESSAGE |
| U1934-87 | LOST COMMUNICATION WITH BCM (CAN MESSAGES STATUS BH_BCM1 AND STATUS_STATUS_BH_BCM2 MISSING FROM BODY CONTROL MODULE) MISSING MESSAGE |
| U1952-83 | IMPLAUSIBLE DATA RECEIVED FROM BRAKE SYSTEM MODULE (CAN MESSAGE BRAKE1 INTEGRITY ERROR) VALUE OF SIGNAL PROTECTION CALCULATION INCORRECT |
| U196A-83 | IMPLAUSIBLE DATA RECEIVED FROM OCCUPANT RESTRAINT CONTROL (CAN MESSAGE IMPACT_INFO INTEGRITY ERROR) VALUE OF SIGNAL PROTECTION CALCULATION INCORRECT |
Factory Service Tools
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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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