U1038
Invalid Or Missing Data For Primary Id
U1038 is an OBD-II diagnostic trouble code meaning: Invalid Or Missing Data For Primary Id. Common causes: malfunction of one of the ecus, problems with can bus wiring or connectors. Estimated repair cost: $56–556.
Symptoms
- The Check Engine Light may be on
- There may be problems with the operation of various vehicle systems
- Incorrect operation of instruments on the dashboard
- Difficulty starting the engine
- Lost connection with diagnostic equipment
Causes
- Malfunction of one of the ECUs
- Problems with CAN bus wiring or connectors
- Interference on the CAN data bus
- Problems with ECU power supply
- Temporary system failure
How to Fix
- Check CAN bus wiring and connectors for damage or corrosion
- Check power supply and grounding of all ECUs
- Check the ECU for errors and update the software
- Check CAN bus resistance
- Replace the faulty ECU
Related codes
FAQ
What does the U1038 code mean?
U1038 is an OBD-II diagnostic trouble code that indicates: Invalid Or Missing Data For Primary Id
What causes a U1038 error code?
The most common causes of U1038 include: Malfunction of one of the ECUs; Problems with CAN bus wiring or connectors; Interference on the CAN data bus; Problems with ECU power supply.
How do I fix a U1038 diagnostic trouble code?
To fix U1038: Check CAN bus wiring and connectors for damage or corrosion. Check power supply and grounding of all ECUs. Check the ECU for errors and update the software. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U1038?
Yes, but get it checked soon
How much does it cost to fix U1038?
The estimated repair cost for U1038 is $56–556. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat