13 APPENDIX C: DIAGNOSTIC TROUBLE CODE INDEX 647
DTC P ID SID FMI Circuit Condition Description
626† 0 254 8
ECM PWR (page 381) Unexpected reset fault
631 0 240 2
ECM (page 388) Read Only Memory (ROM) self test fault
632 0 254 12
ECM (page 388) Random Access Memory (RAM) - CPU self
test fault
655 0 240 13
ECM (page 388)
Programmable parameter list level incompatible
661 0 240 11
ECM (page 388)
RAM programmable parameter list corrupt
664 0 253 14
ECM (page 388) Calibration level incompatible
665 0 252 14
ECM (page 388)
Programmable parameter memory content
corrupt
† See chassis circuit diagrams and Engine Diagnostics Manual for more inform ation.
* Indicates amber ENGINE lamp on when a Diagnostic Trouble Code (DTC) is set.
** Indicates red ENGINE lamp on if the Engine Warning Protection System (EWPS) is enabled and a
DTC is set.
EGES-270-1
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© August 2008 Navistar, Inc.
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