P2765 on Audi: How to Diagnose & Fix
Input/Turbine Speed Sensor "B" Circuit No Signal
1 Audi model · 1 documented issue · $300-$3,500 repair
P2765 on Audi by model: symptoms, diagnosis and fix
The SQ2's 7-speed S tronic dual-clutch (the wet-clutch DQ381 / 0GC unit shared across MQB-platform A3/Q3/TT and VW Golf GTI/R) is generally durable but is widely reported to develop jerky or hesitant engagement at low speed and in stop-start traffic, harsh shifts when hot, and occasional limp-mode events. Owners describe a jolt/shunt when pulling away or in 1-2 / 2-1 changes. Root causes traced in the field include mechatronic valve/solenoid faults, clutch position-sensor faults, K1 clutch-pack wear, and degraded/contaminated gearbox fluid, especially where the DSG oil service has been skipped.
Common Symptoms
- Jerky or harsh shifts at low speed
- Shunt/jolt when pulling away
- Hesitation before gear engages
- Harsh shifting when transmission is hot
- Limp mode / restricted speed
- Gearbox malfunction warning
How to Fix
First step is a proper DSG fluid-and-filter service (the wet-clutch unit needs periodic transmission oil changes — many owners do it around 40k miles even though intervals can be longer). Have the TCU scanned for stored codes; sensor or mechatronic valve replacement and re-coding/adaptation resolves many cases, while severe cases need a full mechatronic unit or clutch-pack replacement. Insist on a software/adaptation update at the dealer for driveability complaints.
Sources for this issue (1)
P2765 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P2765 mean on a Audi?
P2765 stands for "Input/Turbine Speed Sensor "B" Circuit No Signal." A generic powertrain code indicating the transmission control module (TCM/PCM) is receiving no signal from the "B" (secondary) input/turbine speed sensor circuit. This sensor reports rotational speed of the input/turbine shaft, which the controller uses to manage shift timing and torque converter lockup; without its signal the module cannot accurately determine input shaft speed. On Audi it is documented across 1 model: SQ2.
What are the most common causes of P2765?
The most common causes of P2765 are: Faulty input/turbine speed sensor 'B', Open, shorted, or corroded wiring or connector in the sensor circuit, Damaged or contaminated sensor reluctor/tone wheel teeth, Low or contaminated transmission fluid affecting sensor operation, Internal transmission mechanical fault or worn components, Faulty TCM/PCM (less common). The specific cause varies by vehicle.
How much does it cost to fix P2765 on a Audi?
Published repair estimates on Audi range from $300 to $3,500 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for P2765 on a different make?
View P2765 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.