CHECK TRANS light flashing

Tiny
ANONYMOUS
  • 2003 ISUZU NPR
  • 160,000 MILES

CHECK TRANS light flashing. Codes retrieved are 11, 17, 19, 21. Transmission is still shifting but with elevated line pressure. Unable to delete codes and we have diagnostic trees to follow-up on except for the code 19. We are trying to isolate a common denominator between these. Any ideas in advance would be appreciated. I will post our tests and findings here. Thanks in advance.
lgbnotmaria@gmail. Com

Friday, December 21st, 2012 AT 4:09 PM

1 Reply

Tiny
KHLOW2008
  • EXPERT
  • 41,974 POSTS

You should start with one and follow up with test. I don't see any common denominator on the codes.
Like you, I am not able to find any reference to Code 19.

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Tuesday, December 25th, 2012 AT 10:50 AM

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