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What is a B2603 error code?

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11K views 1 reply 2 participants last post by  imarti8888  
#1 ·
Just decided to check the ecu for errors and found B2603. There were no symptoms at all. Reset it and nothing else.
I am worried because I just had sensor failures requiring trans ripped apart to replace these, due to P0847 & P2715.
Also had injectors and pumps installed for e85 last month.
Saw an earlier thread about B2603 on this forum in 2011 - but no conclusions.
Thanks for opinions.
 

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#2 ·
I was told I had an active code b2603 while getting an oil change and ended up with a $2500 shifter assembly out of warranty.


Looking at this shifter assembly I was thinking you can change just the broken part but I guess it comes in one piece.

Sent from my SM-N900T using GT-R Life mobile app
 

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