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Diagnostic Trouble Code Definitions

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.
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