U0389low severityNetwork
Lost Communication With Digital Multimedia Receiver Control Module
on 2007 Ram 3500 5.9L I6 Cummins · 4WD
What this code means
The network has lost communication with the digital multimedia receiver (infotainment) module. Audio, navigation, and display features may stop working.
Symptoms
- Infotainment screen blank or frozen
- No audio output
- Navigation or controls unresponsive
Common causes
- Faulty multimedia receiver module
- Wiring or connector fault to module
- Blown fuse or bad ground
- Software or bus fault
Diagnostic steps
- Scan for module communication faults
- Check power and ground at the receiver
- Inspect data bus wiring and connectors
- Verify module presence on the network
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Autel MaxiSys MS906 Pro →
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Other Network codes on this vehicle
U0001
High Speed CAN Communication Bus
U0002
High Speed CAN Communication Bus Performance
U0003
High Speed CAN Communication Bus (+) Open
U0004
High Speed CAN Communication Bus (+) Low
U0005
High Speed CAN Communication Bus (+) High
U0006
High Speed CAN Communication Bus (-) Open
U0007
High Speed CAN Communication Bus (-) Low
U0008
High Speed CAN Communication Bus (-) High
U0009
High Speed CAN Communication Bus Shorted Together
U0010
Medium Speed CAN Communication Bus