DD15 Troubleshooting – Section 90 SPN 1624 (CPC)

Section 90
SPN 1624 (CPC)

This SPN indicates the J1939 TCO1 message is missing and tachograph vehicle speed signal is erratic and missing.‪

90.1 SPN 1624/FMI 9

90.2 SPN 1624/FMI 13

90.3 SPN 1624/FMI 19