U1147
Additional CAN Interior ECU Detected
U1147 is an OBD-II diagnostic trouble code meaning: Additional CAN Interior ECU Detected. Common causes: installation of non-standard electronic equipment, damage to the can network. Estimated repair cost: ~$167.
Symptoms
- Check Engine light comes on
- There may be malfunctions in the electronic systems of the cabin
- Errors in the operation of the multimedia system
- Problems with climate control
- Reduced functionality of some systems
Causes
- Installation of non-standard electronic equipment
- Damage to the CAN network
- ECU programming error
- Malfunction of one of the control units
- Problems with the CAN network wiring harness
How to Fix
- Check for abnormal equipment
- Scan all ECUs for errors
- Check the integrity of the CAN network
- Reflash or reboot the ECU
- Check connections in the CAN network
Related codes
FAQ
What does the U1147 code mean?
U1147 is an OBD-II diagnostic trouble code that indicates: Additional CAN Interior ECU Detected
What causes a U1147 error code?
The most common causes of U1147 include: Installation of non-standard electronic equipment; Damage to the CAN network; ECU programming error; Malfunction of one of the control units.
How do I fix a U1147 diagnostic trouble code?
To fix U1147: Check for abnormal equipment. Scan all ECUs for errors. Check the integrity of the CAN network. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U1147?
Yes, but get it checked soon
How much does it cost to fix U1147?
The estimated repair cost for U1147 is ~$167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat