For the compressor controller, a "good feature" refers to its Fault Storage and diagnostic system. This allows you to view the last five error codes in the order they occurred, helping you distinguish between a new problem and an old one that wasn't properly cleared. Common Error Codes & Meanings Delcos 1000
However, for restoration projects, a functional Delcos 1000 with no codes provides excellent driveability and fuel economy for TBI (Throttle Body Injection) engines. delcos 1000 error codes