11977.04 Auxiliary Valve 1 Feedback Current Low Diagnostic Trouble Code Not Applicable to This Machine. MS12501,000006E –19–17JAN06–1/1 11980.03 ATT Relief Change Valve Feedback Current High Diagnostic Trouble Code Not Applicable to This Machine. MS12501,000006F –19–17JAN06–1/1 11980.04 ATT Relief Change Valve Feedback Current Low Diagnostic Trouble Code Not Applicable to This Machine. MS12501,0000070 –19–17JAN06–1/1 TM2361 (24JUN08) 9001-10-93 450DLC Excavator Operation and Tests 062608 PN=117 Main Controller (MCF) Diagnostic Trouble Codes 11977.03 — Auxiliary Valve 1 Feedback Current High Diagnostic Trouble Code Not Applicable to This Machine. MS12501,000006D –19–17JAN06–1/1 9001 10 93