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Diagnostic Trouble Code Definitions

DIAGNOSTIC TROUBLE CODE DEFINITIONS

DTC (1) Description
U1016 (2) Loss Of Communications With Class 2 Data Line
U1041 (3) Loss Of EBCM Communication
U1192 (3) Loss Of Passlock/EVO Communication
U1255(2) Loss Of Communications With Class 2 Data Line
(1) Codes listed in this table are only for testing covered in this article. For a complete list of codes, see SELF-DIAGNOSTICS - 4.3L article in ENGINE PERFORMANCE.
(2) Perform TEST B: SCAN TOOL WILL NOT COMMUNICATE WITH CLASS 2 DATA LINE  under SYSTEM TESTS.
(3) For diagnosis, see SELF-DIAGNOSTICS - 4.3L article in ENGINE PERFORMANCE.
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