Deutz Fault Code

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Code 2-1-3 / SPN 729

White Exhaust Smoke / Cold No-Start

System

Air Intake

Symptom

White Exhaust Smoke / Cold No-Start

Diagnosis & fix steps

LOGIC: Intake Air Pre-heater Relay / Grid Heater Circuit Open. ACTION: Inspect grid heater relay power terminals under intake manifold. Check continuity through intake heating element grid using an ohmmeter (spec <1Ω).

Red Seal field insights

Cold Start Physics: Failure of intake air grid heating prevents compressed air in combustion chamber from reaching ignition temperature during cold crank.

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