Source-backed diagnostic reference
P1627 EV diagnostic code
A/D Performance
Reference status: This page preserves source-backed code definitions for discovery. Manufacturer/model applicability, repair steps and safety conclusions are not treated as verified unless a manufacturer-specific verified report is available.
Reference definitions
- BUICK: A/D Performance Source
- CADILLAC: A/D Performance Source
- CHEVY: A/D Performance Source
- GM: A/D Performance Source
- GMC: A/D Performance Source
- MAZDA: Powertrain Control Module ECM TCS Line Communication Error Source
- OLDSMOBILE: A/D Performance Source
- OTHER: Module Supply Voltage Out Of Range Source
- SATURN: A/D Performance Source
- VOLKSWAGEN: Data Bus Powertrain Missing Message From Fuel Injection Pump Source
Search and canonical URL
Capitalization, underscores, hyphens, colons and spaces are normalized to this canonical code identity so alternate scan-tool formats do not create duplicate pages.