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
Radio (LTM)
DIAGNOSTIC CODE INDEX
| DTC | Description |
|---|---|
| B1400-11 | FRONT LEFT AUDIO SPEAKER OUTPUT-CIRCUIT SHORT TO GROUND - PREMIUM |
| B1400-12 | FRONT LEFT AUDIO SPEAKER OUTPUT-CIRCUIT SHORT TO BATTERY - PREMIUM |
| B1400-13 | FRONT LEFT AUDIO SPEAKER OUTPUT-CIRCUIT OPEN - PREMIUM |
| B1400-1A | FRONT LEFT AUDIO SPEAKER OUTPUT-CIRCUIT RESISTANCE BELOW THRESHOLD - PREMIUM |
| B1400-92 | FRONT LEFT AUDIO SPEAKER OUTPUT-PERFORMANCE OR INCORRECT OPERATION |
| B1404-11 | FRONT RIGHT AUDIO SPEAKER OUTPUT-CIRCUIT SHORT TO GROUND - PREMIUM |
| B1404-12 | FRONT RIGHT AUDIO SPEAKER OUTPUT-CIRCUIT SHORT TO BATTERY - PREMIUM |
| B1404-13 | FRONT RIGHT AUDIO SPEAKER OUTPUT-CIRCUIT OPEN - PREMIUM |
| B1404-1A | FRONT RIGHT AUDIO SPEAKER OUTPUT-CIRCUIT RESISTANCE BELOW THRESHOLD - PREMIUM |
| B1404-92 | FRONT RIGHT AUDIO SPEAKER OUTPUT-PERFORMANCE OR INCORRECT OPERATION |
| B1408-11 | REAR LEFT AUDIO SPEAKER OUTPUT-CIRCUIT SHORT TO GROUND - PREMIUM |
| B1408-12 | REAR LEFT AUDIO SPEAKER OUTPUT-CIRCUIT SHORT TO BATTERY - PREMIUM |
| B1408-13 | REAR LEFT AUDIO SPEAKER OUTPUT-CIRCUIT OPEN - PREMIUM |
| B1408-1A | REAR LEFT AUDIO SPEAKER OUTPUT-CIRCUIT RESISTANCE BELOW THRESHOLD - PREMIUM |
| B1408-92 | REAR LEFT AUDIO SPEAKER OUTPUT-PERFORMANCE OR INCORRECT OPERATION |
| B140C-11 | REAR RIGHT AUDIO SPEAKER OUTPUT-CIRCUIT SHORT TO GROUND - PREMIUM |
| B140C-12 | REAR RIGHT AUDIO SPEAKER OUTPUT-CIRCUIT SHORT TO BATTERY - PREMIUM |
| B140C-13 | REAR RIGHT AUDIO SPEAKER OUTPUT-CIRCUIT OPEN - PREMIUM |
| B140C-1A | REAR RIGHT AUDIO SPEAKER OUTPUT - CIRCUIT RESISTANCE BELOW THRESHOLD - PREMIUM |
| B140C-92 | REAR RIGHT AUDIO SPEAKER OUTPUT-PERFORMANCE OR INCORRECT OPERATION |
| B142A-4B | RADIO UNIT HIGH TEMPERATURE - OVER TEMPERATURE |
| B143A-11 | MICROPHONE 1 - CIRCUIT SHORT TO GROUND |
| B143A-12 | MICROPHONE 1 - CIRCUIT SHORT TO BATTERY |
| B143A-13 | MICROPHONE 1 - CIRCUIT OPEN |
| B143A-1A | MICROPHONE 1 - CIRCUIT RESISTANCE BELOW THRESHOLD |
| B143D-11 | MICROPHONE 2-CIRCUIT SHORT TO GROUND |
| B143D-12 | MICROPHONE 2 - CIRCUIT SHORT TO BATTERY |
| B143D-13 | MICROPHONE 2 - CIRCUIT OPEN |
| B143D-1A | MICROPHONE 2 - CIRCUIT RESISTANCE BELOW THRESHOLD |
| B1488-00 | CABIN EQ MISMATCH PERFORMANCE |
| B14DA-2A | HEAD UNIT BUTTON - STUCK |
| B1552-2A | EMERGENCY CALL BUTTON-STUCK |
| B1553-2A | ROAD ASSIST BUTTON-STUCK |
| B1560-11 | CELLULAR ANTENNA 1-CIRCUIT SHORT TO GROUND |
| B1560-13 | CELLULAR ANTENNA 1-CIRCUIT OPEN |
| B1562-11 | GPS ANTENNA - CIRCUIT SHORT TO GROUND |
| B1562-12 | GPS ANTENNA - CIRCUIT SHORT TO BATTERY |
| B1562-13 | GPS ANTENNA - CIRCUIT OPEN |
| B1562-1A | GPS ANTENNA-CIRCUIT RESISTANCE BELOW THRESHOLD |
| B156B-13 | SATELLITE RADIO ANTENNA - CIRCUIT OPEN |
| B156B-1A | SATELLITE RADIO ANTENNA - CIRCUIT RESISTANCE BELOW THRESHOLD |
| B1570-19 | USB COMMUNICATION - OVERCURRENT |
| B1577-13 | UNIVERSAL CONSUMER INTERFACE (UCI) - CIRCUIT OPEN |
| B1578-13 | AM/FM ANTENNA - CIRCUIT OPEN |
| B1578-1A | AM/FM AUDIO ANTENNA - CIRCUIT RESISTANCE BELOW THRESHOLD |
| B1579-13 | DIVERSITY ANTENNA - CIRCUIT OPEN |
| B1579-1A | DIVERSITY ANTENNA - CIRCUIT RESISTANCE BELOW THRESHOLD |
| B157A-13 | DAB ANTENNA - CIRCUIT OPEN |
| B157A-1A | DAB ANTENNA - CIRCUIT RESISTANCE BELOW THRESHOLD |
| B157E-00 | TOUCH SCREEN LOCKED |
| B210A-16 | SYSTEM VOLTAGE LOW - CIRCUIT VOLTAGE BELOW THRESHOLD |
| B210B-17 | SYSTEM VOLTAGE HIGH-CIRCUIT VOLTAGE ABOVE THRESHOLD |
| B2206-00 | CURRENT VIN MISSING/MISMATCH |
| B221E-00 | RADIO INTERNAL |
| B222C-00 | VEHICLE CONFIGURATION NOT PROGRAMMED |
| B223B-00 | VEHICLE CONFIGURATION MISMATCH |
| B273F-00 | AIRBAG SIGNAL TEST FAILED |
| B280B-00 | REAR CAMERA VIDEO INPUT |
| 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 |
| U0129-00 | LOST COMMUNICATION WITH BRAKE SYSTEM CONTROL MODULE 1 |
| U0140-00 | LOST COMMUNICATION WITH BODY CONTROL MODULE |
| U0155-00 | LOST COMMUNICATION WITH CLUSTER-CCN |
| U0186-00 | LOST COMMUNICATION WITH AUDIO AMPLIFIER |
| U0191-00 | LOST COMMUNICATION WITH DIGITAL TELEVISION MODULE |
| U0418-00 | IMPLAUSIBLE DATA RECEIVED FROM BRAKE SYSTEM CONTROL MODULE 1 |
| U0422-00 | IMPLAUSIBLE DATA RECEIVED FROM BODY CONTROL MODULE |
| U1176-00 | LOST COMMUNICATION WITH EMERGENCY ALERT MODULE |
| U11FA-00 | LOST COMMUNICATION WITH RIGHT BLIND SPOT SENSOR |
| U11FB-00 | LOST COMMUNICATION WITH LEFT BLIND SPOT SENSOR |
| U120E-00 | LOST COMMUNICATION WITH COMFORT SEAT AND WHEEL MODULE |
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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