P2765 on Audi
Input/Turbine Speed Sensor "B" Circuit No Signal
P2765 on Audi vehicles indicates input/turbine speed sensor "b" circuit no signal. Au7o has documented this code across 1 Audi model — most commonly on SQ2. 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. Typical repair costs on Audi range from $300 to $3,500, depending on the specific model and root cause.
Common Causes of P2765
- •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)
P2765 on Audi by Model
Audi SQ2(1 issue)
- S tronic (DQ381) 7-speed wet-clutch transmission: jerky low-speed shifts, hesitation and limp mode2019-2024
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.
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What does P2765 mean on 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 specifically, this code is documented across 1 model.
What causes P2765 on Audi vehicles?▼
Common causes on Audi: 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. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P2765 on a Audi?▼
Repair costs on Audi range from $300 to $3,500, depending on the specific model and root cause.
Which Audi models have P2765 documented?▼
Au7o has documented P2765 on 1 Audi model: SQ2.