P2775
Upshift Switch Circuit Range/Performance
Transmission
Generic OBD-II
Low
What it means
P2775 means the transmission controller sees an implausible signal from the upshift switch — the button or paddle you use to request a manual upshift. The reading is out of its expected range, so manual upshift requests may be ignored. It is a minor electrical fault: the car still drives and shifts automatically.
Low
Can I keep driving? Yes — you can keep driving; the manual upshift request may be ignored and the transmission will usually shift automatically as normal.
Common symptoms
What you'll notice
- Manual/Tiptronic upshift requests are ignored or delayed
- Transmission stays in a lower gear or reverts to fully automatic shifting
- Check-engine light on
- Occasional harsh or late upshift
Common causes
Most likely first
- Faulty upshift switch (paddle or shift-gate contact)Likely
- Corroded, loose, or damaged wiring/connector at the switchCommon
- Signal out of expected range due to a chafed or intermittent circuitCommon
- Moisture or spilled liquid in the switch assemblyLess often
- Faulty transmission control module (less common)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and inspect the upshift switch connector for corrosion, moisture, or bent pins.
- Back-probe the switch signal while operating it to confirm the voltage changes as expected.
- Repair or reconnect any damaged wiring between the switch and the transmission controller.
- Replace the upshift switch if the signal stays out of range with good wiring.
- Clear the code and road-test in manual mode to confirm the fix.
FAQ
Quick answers
Is it safe to drive with P2775?+
Yes. This affects the manual upshift input only; the transmission still shifts on its own, so it is safe to drive while you get it looked at.
Can I just clear P2775?+
You can clear it, but if the switch or its wiring is faulty the code will return the next time the signal reads out of range.
Related codes
Read & clear P2775 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX