ZF 6073.023.091 TCU WG 94 EC3A for WG94 | OEM Genuine Part

Overview

The ZF 6073.023.091 TCU WG 94 EC3A is a critical electronic control unit specifically designed for the WG 94 series transmission. This OEM genuine part, identified by SKU 6073.023.091, governs shift timing, clutch engagement, and torque converter lock-up. Positioned directly on the valve body assembly, it processes sensor inputs to optimize gear selection under varying load conditions. Without this module, the transmission cannot execute electronic commands, making it essential for precise driveline management in heavy-duty applications.

Symptoms of Failure

• Erratic shifting or gear hunting: A failing TCU causes the transmission to randomly shift between gears or hold gears too long, especially under load.
• No forward or reverse engagement: When the control unit loses communication, the transmission may fail to engage any gear, leaving the vehicle immobile.
• Delayed or harsh shifts: Worn internal components lead to abrupt clutch applications or significant lag between gear changes.
• Check engine or transmission warning lights: The TCU triggers fault codes for solenoid or communication errors, often accompanied by limp-home mode activation.

Technical Specifications

Compatibility

This TCU is engineered for the WG 94 Series transmission family. Based on its design and electronic architecture, it is compatible with ZF models including the WG180, WG200, and WG210 when used in conjunction with the correct valve body. It also integrates with earlier WG92 variants that have been upgraded to EC3A standards. Always verify your transmission serial number before installation.

Related Components

During replacement, inspect these adjacent parts for wear. The 4661101046 HOUSING encloses the valve body, while the 4661301125 HOUSING II provides additional structural support. Secure the assembly with the 0631306174 CYLINDRICAL PIN and verify identification via the 0769123894 TYPE PLATE.