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
- Medium
- Can I keep driving?
- Yes, but with caution
- Estimated cost
- $50 to $400
- 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
U0300 Internal Control Module Software Incompatibility Medium
The U0300 code means the software versions of the control modules in the vehicle are not compatible with each other. It shows up after a module has been replaced or reprogrammed. The fix almost always comes down to programming the module with the correct software.