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.
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.
