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
$80 to $2,000
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. P0700 Transmission Control System Malfunction (Request for MIL Illumination) High

    The P0700 code does not describe a specific fault. It is the signal the transmission module sends to the engine computer to turn on the check engine light, meaning it stored one or more codes of its own. The real diagnosis is reading those codes with a scan tool that can reach the transmission module.

    Step-by-step diagnosis for P0700