Spn 3663 Fmi 5 - Piping Rock Lab Tech Job Descriptionsupport And Help Get information about suspect parameter number (spn) and failure mode identifier (fmi) fault code list and read descriptions before engine troubleshooting diy process. This diagnosis is typically an open circuit, short to ground or short to power. 122. 1 spn 3663/fmi 14. 121. 1. 1 open circuit,. Spn 3663 fmi 4 (mcm) injector cylinder #5 amplifier control valve abnormal operation (min)
Piping Rock Lab Tech Job Descriptionsupport And Help