U1008low severityNetwork
Lost Communication With Radio
on 2013 Ram 2500 6.7L I6 Cummins Diesel · 4WD
What this code means
The module has lost CAN bus communication with the radio/infotainment head unit. No direct OBD P-code equivalent.
Symptoms
- Radio not responding
- No audio output
- Display features missing
Common causes
- Faulty radio module
- CAN wiring fault to radio
- Blown radio fuse
- Poor ground connection
Diagnostic steps
- Check radio power and ground
- Scan for other network codes
- Test CAN wiring to radio
- Inspect radio connector pins
🔌 Don't have a code reader?
Any of these will read and clear this code — pick by how deep you want to go.
Budget handheld~$40
ANCEL AD410 →
No-phone-needed handheld — reads, clears, live data, freeze frame.
✓ ANCEL official store
Serious DIY~$100
BlueDriver Pro →
Enhanced codes (ABS, airbag, TPMS) plus repair reports.
SHOP FAVORITEShop-grade tablet~$300
Autel MaxiCOM MK808S →
Bidirectional tests, service resets, all systems.
✓ Autel official store
Pro diagnostics$1,500+
Autel MaxiSys MS906 Pro →
Full-system pro platform — topology mapping, ECU coding, the works.
✓ Autel official store
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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