CAT 3126B Fault Code: 64-02 PID: Flash Code 34 SPN: FMI: Loss of RPM Signal on Engine Speed/Timing Sensor #2

Posted by PerDiezel Solutions on January 12, 2026

The Speed/Timing signal or Engine Speed/Timing Sensor #2 indicates rpm but timing pattern is lost.

CAT 3126B Fault Code: 91-08 PID: Flash Code 32 SPN: FMI: Invalid Throttle Signal

CAT 3126B Fault Code: 84-01 PID: Flash Code 31 SPN: FMI: Loss of Vehicle Speed Signal

CAT 3126B Fault Code: 30-13 PID: Flash Code 29 SPN: FMI: PTO Throttle Sensor Calibration

CAT 3126B Fault Code: 30-08 PID: Flash Code 29 SPN: FMI: Invalid PTO Throttle Signal

CAT 3126B Fault Code: 91-13 PID: Flash Code 28 SPN: FMI: Throttle Sensor Calibration

CAT 3126B Fault Code: 110-04 PID: Flash Code 27 SPN: 110 FMI: 4 Coolant Temperature Sensor Short Circuit

WARNING!