P2768 code meaning
Input/Turbine Shaft Speed Sensor B Circuit Intermittent
Powertrain system Generic code P27xx codes Check engine light
What P2768 means
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.
P2768 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor0.5 to 6 hours
- Clears after repairAfter a drive cycle
Symptoms of P2768
- Gearbox malfunction message, intermittent
- Limp mode, loss of power or no reverse gear
- Occasional missed up- or downshifts
Common causes of P2768
- Most likelyTransmission control unit fault on affected production batches
- PossibleLoose contact or damaged wire in the sensor B circuit
- Less likelyElectrical noise producing false speed spikes
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Input shaft speed sensor bWiring harness
What each part of P2768 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 7 | Area: transmission. |
| 68 | The exact fault in that area. |
What to do next
- Note P2768 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P2768
What does P2768 mean?
P2768 means "Input/Turbine Shaft Speed Sensor B Circuit Intermittent". P2768 stands for a sensor B signal that drops out or jumps only now and then. It is a generic code, so it means the same on every make.
Is it safe to drive with P2768?
Drive gently and only to a workshop. With P2768 the car can go into limp mode (reduced power) to protect itself.
Will P2768 fail an emissions test?
Yes, it can. P2768 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P2768 to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 6 hours of work. This is a job for a workshop.
Will P2768 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.