U1078
Invalid Or Missing Data For Primary Id
U1078 is an OBD-II diagnostic trouble code meaning: Invalid Or Missing Data For Primary Id. Common causes: problems with the can bus (open or short circuit), malfunction of one of the control modules. Estimated repair cost: $17–111.
Symptoms
- Check Engine light comes on
- There may be problems with the operation of various vehicle systems
- Reduced engine performance
- Errors in the operation of electronic systems
Causes
- Problems with the CAN bus (open or short circuit)
- Malfunction of one of the control modules
- Poor contact in wiring connectors
- Problems with power supply of electronic modules
- Software errors in modules
How to Fix
- Check the integrity of the CAN bus and connection
- Inspect connectors and wiring harnesses for damage
- Check power supply of all modules
- Read all error codes and run diagnostics
- If necessary, reflash or replace the faulty module
Related codes
FAQ
What does the U1078 code mean?
U1078 is an OBD-II diagnostic trouble code that indicates: Invalid Or Missing Data For Primary Id
What causes a U1078 error code?
The most common causes of U1078 include: Problems with the CAN bus (open or short circuit); Malfunction of one of the control modules; Poor contact in wiring connectors; Problems with power supply of electronic modules.
How do I fix a U1078 diagnostic trouble code?
To fix U1078: Check the integrity of the CAN bus and connection. Inspect connectors and wiring harnesses for damage. Check power supply of all modules. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U1078?
Yes, but get it checked soon
How much does it cost to fix U1078?
The estimated repair cost for U1078 is $17–111. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat