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
Often seen with P2775
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