Vehicles

SPN 103 FMI [2,15,16,18] DTC Explained, Troubleshooting

SPN 103 is a diagnostic trouble code for: Engine Turbocharger 1 Speed Data Erratic.

 

FMI 2 Intermittent Or Incorrect

FMI 15 Above Normal Operating Range – Least
Severe Level

FMI 16 Above Normal Operating Range – Moderately
Severe Level

FMI 18 Below Normal Operating Range – Moderately
Severe Level

 

Troubleshoot:
Turbocharger speed sensor, ECM, alternator

 

 

SPN is suspect parameter number.