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 MANUALSJEEP2014GRAND CHEROKEE LAREDO, AWDREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTCOMMUNICATION DEVICESBODY CONTROL MODULE (BCM) - DTCS B182C-12 TO U1433-24DIAGNOSIS AND TESTINGU0121-00-LOST COMMUNICATION WITH ANTI-LOCK BRAKE SYSTEM (ABS) CONTROL MODULEDIAGNOSTIC TEST
2014 Jeep Grand Cherokee Laredo, AWD
Diagnostic Test
2014 Jeep Grand Cherokee Laredo, AWDSECTION Diagnostic Test
CHECK FOR AN ACTIVE DTC
NOTE:
If DTC U0002-00-CAN C BUS OFF PERFORMANCE is set in the Body Control Module (BCM), diagnose this DTC before continuing with this diagnostic procedure.
- Turn the ignition on.
- With the scan tool, read active DTCs.
Does the scan tool display this DTC as active?
Yes
- Refer to DIAGNOSIS AND TESTING and perform the NO RESPONSE FROM ABS (ANTI-LOCK BRAKE SYSTEM MODULE) diagnostic procedure.
No
- Refer to DIAGNOSIS AND TESTING and perform the STORED LOST COMMUNICATION DTCS diagnostic procedure.
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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.