P1681moderate severityPowertrain
No I/P Cluster CCD/J1850 Messages Received
on 2008 Dodge Viper 8.4L V10 · RWD
What this code means
The PCM is not receiving messages from the instrument panel cluster over the CCD/J1850 bus. This is a Chrysler-specific code with no direct OBD-II generic equivalent.
Symptoms
- Inaccurate gauges
- Warning lights on
- Cluster not updating
Common causes
- Faulty instrument cluster
- CCD/J1850 bus wiring fault
- Bad connector or ground
- Faulty PCM
Diagnostic steps
- Scan all modules for codes
- Inspect CCD/J1850 bus wiring
- Check cluster power and ground
- Test bus communication with scope
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P0004
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P0005
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P0006
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P0007
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P0008
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P0009
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P0010
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