U1031
UNetworkSCP (J1850) Invalid or Missing Data (Experimental #1)
What does this code mean?
Severity : LowU1031 is a manufacturer specific code linked to the older SCP communication network (J1850 standard). It reports invalid or missing data for a message labelled "experimental #1". The exact meaning depends on the manufacturer and on the module involved, and this code is not widely documented.
Symptoms
- Check engine light or dashboard message.
- Occasional loss of a function or feature.
- Other network codes possible.
- Sometimes no noticeable symptom.
Possible causes
- Corroded or damaged SCP network lines or connectors.
- Faulty or unpowered transmitting module.
- Low battery voltage.
- Poor ground at a control module.
Diagnosis and repair
- Check the factory information to identify the module involved.
- Check battery condition and charge.
- Read codes from every module on the network.
- Inspect the communication lines, connectors and grounds.
- Repair the wiring or faulty module, then clear the codes.
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Code
U1031
Category
Network
Prefix
U
Standard
OBD-II / SAE J2012