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Home › Chrysler › 2017 › 200 LX, Eng CD ED8 › Repair and Diagnosis › Engine Performance › System › 2.4L - DTCS P2503 To U1504 › DTC Troubleshooting › U0164-Lost Communication With HVAC Control Module › When Monitored

When Monitored

Continuously when the ignition is on.

Battery voltage between 9 and 16 volts.

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