P2768Input/Turbine Shaft Speed Sensor B Circuit Intermittent
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- P2768 stands for a sensor B signal that drops out or jumps only now and then. Audi bulletin 2067653/9 (2024) covers 2020–24 A4, A5, A6, A7 and Q5 models with gearboxes built from 15 June 2020 to 30 November 2023: if P276800 is stored as passive/sporadic, alone or with P071800, control unit J217 or, where not sold separately, the mechatronic unit is replaced; an active entry calls for normal guided diagnosis. Drivers see a gearbox fault message, limp mode or no reverse. Nissan bulletin NTB20-086 treats a permanent P2768 on 2019 Sentra and Versa with the RE0F11A CVT as a TCM fault. Mitsubishi's 2022 CVT sets it when the output-side sensor B claims more than 16,212 rpm for 2 s, an impossible value.
- What you may notice
- Gearbox malfunction message, intermittent
- Limp mode, loss of power or no reverse gear
- Occasional missed up- or downshifts
- Likely causes
- LikelyTransmission control unit fault on affected production batches
- PossibleLoose contact or damaged wire in the sensor B circuit
- RareElectrical noise producing false speed spikes
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €100 – €3,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.