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Home › Dodge and Ram › 2012 › Charger SXT Plus, RWD, Gas › Repair and Diagnosis › Engine Performance › System › Vehicle System Interface Module (VSIM) Module - Electrical Diagnostics › DTC Troubleshooting › U0164-Lost Communication With HVAC Control Module › When Monitored:

When Monitored:

Continuously when the ignition is on.

Battery voltage between 10 and 16 volts.

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