Deutz Fault Code

Free · no signup

Code 3-1-3 / SPN 110 FMI 3

Engine Stays in Cold Warm-Up Maps

System

Cooling

Symptom

Engine Stays in Cold Warm-Up Maps

Diagnosis & fix steps

LOGIC: Engine Coolant Temperature Sensor Signal High (Open Circuit). ACTION: Check for broken wiring leads or uncoupled pins at the coolant temp sensor plug. Measure sensor resistance across operating temp range.

Red Seal field insights

Open Circuit Physics: An open signal line pulls up to maximum reference voltage, tricking the EMR into reading sub-zero temperatures and over-enriching fuel.

Track this across your whole fleet

This code is free to read. AM Fleet Integrity lets your team log fault codes against assets, plus the full fault-code library, QR operator reporting, PM scheduling and predictive alerts. Start free — no credit card required.

Start your free trial

← All Deutz fault codes