Audi DQ380 DQ381 0DE 0GC Mercedes-Benz MB C Class (W205) E Class (W213) 2016-2023
Pressure sensor for Bosch VGS-NAG3 725.0 TCU repair solution
Inside the mechatronics control unit there are clutch pressure/position sensors that measure hydraulic pressure and help calculate clutch positions for each sub-transmission. These sensors are critical for correct gear engagement and smooth shifting.
The most common failures in DQ380/DQ381 transmissions are:
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Faulty pressure/position sensors in the mechatronics unit
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Electrical faults in the sensor circuits
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Sensor drift or wear over time causing bad signal outputs
VW / Audi typical fault code
When these sensors fail or malfunction, the transmission control unit logs codes such as:
P1735 / P173500Position/pressure sensor for Clutch #1 — electrical malfunction
P1736 / P173600Position/pressure sensor for Clutch #2 — electrical malfunction
P175E00 / P176E00Clutch position anomalies after or during operation
These codes indicate the mechatronics can’t reliably read clutch pressure/position, so it cannot regulate clutch engagement properly
Mercedes Benz MB typical fault code
Fault CodeMeaning
P0840Transmission Fluid Pressure Sensor/Switch “A” Circuit Malfunction
P0841Transmission Fluid Pressure Sensor “A” Range/Performance Issue
P0842Transmission Fluid Pressure Sensor “A” Low Output
P0843Transmission Fluid Pressure Sensor “A” High Output
P0844Transmission Fluid Pressure Sensor “A” Intermittent Signal
P0845Transmission Fluid Pressure Sensor/Switch “B” Circuit Malfunction
P0846Transmission Fluid Pressure Sensor “B” Range/Performance Issue
P0847Transmission Fluid Pressure Sensor “B” Low Output
P0848Transmission Fluid Pressure Sensor “B” High Output
P0849Transmission Fluid Pressure Sensor “B” Intermittent Signal