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DTC › EST1 EST1 / 0276

System degradation in very low ambient temperature, which could be caused by oil solidification.

â–¶ How to fix

• If this vehicle is used in areas with extremely cold climates, the hydraulic oil might have to be replaced. See service litterature for recommended oil quality in cold climate. • If the vehicle is not used in cold climate and the DTC is active, both ambient temperature sensors have errors.

What you'll see

No driver-visible symptom recorded.

System reaction

No system-reaction text recorded.

Diagnostic depth

Detection

The DTC is set active if another DTC concerning hydraulic valves or plausibility tests is active and either: • the ambient temperature is extremely low (cold climate) • both temperature sensors have unknown values/errors.

Possible cause

• Extremely low temperatures will cause the oil to solidify, thus lowering the system efficiency/performance. • If no temperature sensors are available/have errors and the system is not working as expected, this DTC is also set.

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