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P0601 Diagnostic Trouble Code Discussion for May 2009

Control Module Read Only Memory

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Trouble Ticket Help Requests for DTC P0601
Help Request Posted
2001 Audi A4 Quattro Avant 1.8L No Start VIN: WAUKC68DX1
P0601: communication error. THis car came in running with a slipping trans. Installed a used trans. Ran for 2 days and than had dead battery, no start at all. New crank sensor and used pcm. still no communication with any scan tool now. no ground to main relay, give it ground and fuelpum...
May 07, 2009