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 MANUALSDODGE AND RAM2023DURANGO GT, RWDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCOMMUNICATION DEVICESDRIVER DOOR MODULE (DDM) (DMFL) - DTCS B173D-11 TO U113D-00DTC TROUBLESHOOTINGU0164-00-LOST COMMUNICATION WITH HVAC CONTROL MODULEDIAGNOSTIC TEST
2023 Dodge and Ram Durango GT, RWD
Diagnostic Test
2023 Dodge and Ram Durango GT, RWDSECTION Diagnostic Test
CHECK FOR AN ACTIVE DTC
- Turn the ignition on.
- With the scan tool, create a Vehicle Scan Report and attach it to the repair order.
- With the scan tool, read active DTCs.
Is the DTC active?
Yes
- Perform the U0164-00-Lost Communication with HVAC Control Module in the BCM. Refer to DIAGNOSTIC CODE INDEX .
No
- Perform the Stored Lost Communication DTCs diagnostic procedure. Refer to STORED LOST COMMUNICATION DTCS .
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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.