User Manual Q&AAnswer Question
The CEL is on and error code SPN 2623/FMI 8 indicates a Channel 2 Sensor Signal failure. Advice on how to fix this?
I am experiencing an issue with my ProTech EPA07 Engine Exhaust system. The CEL (Check Engine Light) is on and I received an error code SPN 2623/FMI 8, which indicates that the Channel 2 Sensor Signal has failed (high or low). I have the installation manual, but I'm not sure how to troubleshoot and fix this problem. Can you provide guidance on how to resolve this issue?
