Deutz Fault Code
Free · no signupCode 2-1-2 / SPN 190 FMI 2
Extended Crank / Hard Start / Surging
System
Engine Speed
Symptom
Extended Crank / Hard Start / Surging
Diagnosis & fix steps
LOGIC: Crankshaft Speed Sensor Signal Speed Implausible / Erratic.
ACTION: Inspect crank sensor wiring for shield grounding damage. Clean flywheel reluctor teeth and verify sensor AC voltage output while cranking (>1.5V AC).
Red Seal field insights
Timing Sync: The EMR relies on precise crankshaft rotational velocity markers to time individual unit pump solenoid energization windows.
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