Author Topic: Help Codes 14 and 21 2009 ULY  (Read 753 times)

0 Members and 1 Guest are viewing this topic.

Offline DocSlick

  • Member
  • Posts: 29
Help Codes 14 and 21 2009 ULY
« on: September 16, 2019, 08:17:02 AM »
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.