Multi-code OBD2 diagnosis
Enter all the codes your scanner showed, not just the first one. We give you the overall severity, whether you can keep driving, the order in which to check them and how they relate to each other.
Summary
- Overall severity
- High
- Can I keep driving?
- Yes, but with caution
- Estimated cost
- $0 to $1,500
- Codes analyzed
- 1 of 1
The order below is the recommended one: first the codes that can cause the others. After each repair, clear the codes and check which ones come back.
Order of inspection
U0012 Medium Speed CAN Communication Bus (+) Open High
The U0012 code means there is an open circuit on the CAN high (+) line of the medium speed bus. It usually causes communication codes in several modules and, depending on the network affected, limp mode or warning lights. Drive with caution, because important systems can fail.