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February 13, 2026 Service bulletin

Complaint Check engine light on with the following fault is current in the VGS Control Unit: P084300 Oil...

Mercedes-Benz technical service bulletin LI27.19-P-080219 for 2017-2025 Mercedes-Benz C300, 2020-2023 Mercedes-Benz E350 and 2016-2023 Mercedes-Benz GLC 300 and others.

Bulletin number
LI27.19-P-080219
Component
Power train
Summary
Complaint Check engine light on with the following fault is current in the VGS Control Unit: P084300 Oil pressure sensor 'A' has a short circuit to positive stored in VGS control unit. Cause Electrical failure of oil pressure sensor integrated into VGS Control Unit Remedy Intelligent Predictive Repair (IPR) recognizes this fault pattern and will provide the necessary repair suggestion. 1. Perform IPR and follow the recommended procedures 2. Replace complete EHS valve body, fill to near max fluid level, & complete initial start-up - Ensure all oil guide pipes are installed in the new valve body to prevent a new concern after replacement.

Owners of these vehicles have filed 232 complaints in the transmission category.

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