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?
No, stop and have it checked
Estimated cost
$50 to $3,000
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

  1. P0169 Incorrect Fuel Composition High

    The P0169 code means the fuel is not what the engine expects: on flex fuel vehicles, an ethanol percentage that makes no sense; on diesels, a fuel with abnormal characteristics, such as water or gasoline in it.

    Step-by-step diagnosis for P0169