P173F on 2009-2017 Volkswagen Scirocco (DSG, 1.4 TSI DSG) — Valve 2 Electrical Malfunction in Partial Transmission 1
1 vehicles · 1 makes · $900-$5,000 repair
Most Reported On
P173F is an OBD-II diagnostic trouble code meaning “Valve 2 Electrical Malfunction in Partial Transmission 1.” P173F is a manufacturer-specific VAG (Volkswagen/Audi/SEAT/Skoda) DSG transmission code, most commonly seen on the DQ381 (0GC) 7-speed wet-clutch gearbox. It indicates an electrical malfunction of hydraulic control valve 2 within the mechatronic unit of partial (sub-)transmission 1, meaning the transmission controller has detected an open, short, or out-of-range electrical fault in that solenoid/valve circuit. It typically corresponds to internal DFCC 10743 and is often accompanied by limp mode, loss of gear selection, harsh or jerky shifts, and a "Gearbox Malfunction" dashboard warning. This code is most commonly reported on 2009-2017 Volkswagen Scirocco (DSG, 1.4 TSI DSG), with repair costs ranging from $900 to $5,000.
Common Causes
Typical Repair Cost
Based on 1 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose P173F, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
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BlueDriver Pro Bluetooth Scanner
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Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
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LAUNCH CRP123X OBD-II Scanner
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Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
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FAQ
What does P173F mean?
P173F stands for "Valve 2 Electrical Malfunction in Partial Transmission 1." P173F is a manufacturer-specific VAG (Volkswagen/Audi/SEAT/Skoda) DSG transmission code, most commonly seen on the DQ381 (0GC) 7-speed wet-clutch gearbox. It indicates an electrical malfunction of hydraulic control valve 2 within the mechatronic unit of partial (sub-)transmission 1, meaning the transmission controller has detected an open, short, or out-of-range electrical fault in that solenoid/valve circuit. It typically corresponds to internal DFCC 10743 and is often accompanied by limp mode, loss of gear selection, harsh or jerky shifts, and a "Gearbox Malfunction" dashboard warning.
What are the most common causes of P173F?
The most common causes of P173F are: Failed or short-circuited solenoid/pressure-control valve inside the mechatronic unit, Faulty mechatronic control module (internal electronics failure, common on DQ381/DQ380), Wiring or connector faults to the mechatronic unit (corrosion, chafing, water ingress), Degraded, contaminated, or low DSG transmission fluid affecting valve operation, Internal mechatronic hydraulic blockage or stuck valve, Loss of power supply or ground reference to the transmission control unit. The specific cause varies by vehicle.
How much does it cost to fix P173F?
Repair costs for P173F range from $900 to $5,000, depending on the vehicle and root cause.
Which vehicles are affected by P173F?
Au7o has documented P173F across 1 vehicle models from 1 manufacturers: Volkswagen.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.