Diagnostic Trouble Code Definitions

WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

DIAGNOSTIC TROUBLE CODE DEFINITIONS

DTC ⁽¹⁾

Description

P0562

Low System Voltage

P0563

High System Voltage

P0622

Out Of Range Duty Cycle Signal

P1637

Generator Turn-On Signal Circuit Voltage Out Of Range

P1638

Pulse Width Modulation Signal Out Of Range

⁽¹⁾	Codes listed in this table are only for testing covered in this article. For complete DTC listing, see BODY CONTROL MODULES - CORVETTE article in ACCESSORIES & EQUIPMENT.