U1100
SCP (J1850) Invalid or Missing Data for Primary Id
Description
SCP (J1850) Invalid or Missing Data for Primary Id. This network diagnostic trouble code covers data exchange between the control modules of the vehicle.
OBD Codes Details
Possible Causes
Damaged bus wiring, poor module ground, a control module that has stopped responding
Solution
Check bus wiring and connectors, test module grounds and supply, identify the module that stopped answering, repair the harness
Symptoms
- Network communication errors
- Module communication failures
- CAN bus related issues
- Electronic control unit problems
Diagnostic Recommendations
- Check CAN bus communication
- Test module connectivity
- Inspect network wiring
- Verify module programming
Repair Cost Estimate
- Network diagnostic: $100-250
- Module programming: $150-400
- CAN bus repair: $200-800
- Multiple module replacement: $500-2500
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Fact-checking completed
Verified by:
Pavel Volkov
Created:
Information verified against official sources
Official Sources
Society of Automotive Engineers
Official OBD-II diagnostic trouble codes standard (SAE J2012)
Automotive engineering standards organization
International Organization for Standardization
International standard for vehicle diagnostic systems
International standards for automotive diagnostics
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