Deutz Fault Code
Free · no signupSPN 97 FMI 3
Water in Fuel lamp on; Potential derate to protect injectors.
System
Not specified
Symptom
Water in Fuel lamp on; Potential derate to protect injectors.
Diagnosis & fix steps
Water in Fuel Sensor High
LOGIC: Sensor detects high conductivity in the fuel bowl (Open circuit).
ACTION: Drain the primary fuel filter bowl. Check for water. Inspect sensor pins for corrosion.
FIX: Drain fuel/water separator; replace sensor if it won't clear.
Red Seal field insights
If the bowl is empty and the code is still there, unplug it. If the code stays "High," you have a break in the signal wire.
Same code keeps coming back?
That's a program problem, not a part problem. Book a 30-minute uptime review with Grant, a Red Seal Heavy Duty Technician.
Read before you touch anything
- This is general reference information, not a repair manual. It is for trained, qualified technicians.
- Fault codes, meanings and procedures vary by model, serial number and software version. Confirm the code and the procedure against the manufacturer's service manual before acting.
- Follow the OEM service manual, torque specs and your site's safety procedures: lockout/tagout, block raised equipment, relieve hydraulic, fuel and air pressure, and let hot systems cool.
- You use this information at your own risk. Adventure Mechanical and AM Fleet Integrity accept no liability for damage, injury, downtime or loss arising from its use.
- Not affiliated with or endorsed by any manufacturer. Brand names are used only to identify the equipment a code applies to.
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