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
$0 to $350
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. P1626 Theft Deterrent Fuel Enable Signal Not Received (GM) High

    On General Motors vehicles (Chevrolet, GMC, Buick, Cadillac), the P1626 code means the computer did not receive the fuel enable signal from the theft deterrent system. The engine starts and then shuts off, and the security light is on or blinking.

    Step-by-step diagnosis for P1626