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

  1. U0115 Lost Communication with ECM/PCM B High

    The U0115 code means other modules in the vehicle stopped receiving messages from engine control module B. The usual effect is engine limp mode. Drive with caution and have it checked soon.

    Step-by-step diagnosis for U0115