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Help Codes 14 and 21 2009 ULY

Started by DocSlick, September 16, 2019, 08:17:02 AM

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DocSlick

I have a 2009 ULY that has current codes 14 and 21. 14 should be engine temp sensor and 21 exhaust open/closed. With my scanner connected, the ECM is seeing a good temp signal.
Any ideas where to go with code 14. I have no idea where to start with code 21. I did clean the grounds, made no difference. The engine runs good and the cooling fan works. Thanks in advance for any help or ideas.