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
- $30 to $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
B1318 Low Supply Voltage at Body Control Module Medium
The B1318 code means a body control module detected that its supply voltage dropped below its operating limit. It is not a failed module, it is a warning about the charging system or the connections feeding it. It often shows up together with other codes in different modules, and one repair clears them all.