U1047
Invalid Or Missing Data For Primary Id
U1047 is an OBD-II diagnostic trouble code meaning: Invalid Or Missing Data For Primary Id. Common causes: broken or damaged can bus wiring, malfunction of one of the electronic modules. Estimated repair cost: $6–167.
Symptoms
- Check Engine Light Is On
- Incorrect operation of some vehicle systems
- Loss of engine power
- Gear shifting problems (if automatic transmission is affected)
- Infotainment system malfunctions
Causes
- Broken or damaged CAN bus wiring
- Malfunction of one of the electronic modules
- Problems with module power supply
- Oxidation of contacts in connectors
- Software failure in one of the control units
How to Fix
- Conduct diagnostics of the CAN bus for breaks and short circuits
- Check connections and connectors of all modules
- Read error codes from other modules to pinpoint the problem
- Update the software of the problematic module (if required)
- Replace the faulty module if necessary
Related codes
FAQ
What does the U1047 code mean?
U1047 is an OBD-II diagnostic trouble code that indicates: Invalid Or Missing Data For Primary Id
What causes a U1047 error code?
The most common causes of U1047 include: Broken or damaged CAN bus wiring; Malfunction of one of the electronic modules; Problems with module power supply; Oxidation of contacts in connectors.
How do I fix a U1047 diagnostic trouble code?
To fix U1047: Conduct diagnostics of the CAN bus for breaks and short circuits. Check connections and connectors of all modules. Read error codes from other modules to pinpoint the problem. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U1047?
Yes, but get it checked soon
How much does it cost to fix U1047?
The estimated repair cost for U1047 is $6–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat