P2775: Upshift Switch Circuit Range/Performance

P2775 covers an upshift paddle or tip switch whose voltage is electrically possible but belongs to neither of its two legal states. GM's twin-clutch TCM tables for 2023 and 2024 read the plus paddle as an analogue input: pressed should give 2.2–3.52 V, released 3.826–4.744 V. If the voltage sits outside both windows for 120 s, P2775 sets as Type C, so without MIL. Ford's 2024 summary for the TR9070 twin-clutch gearbox lists P2775 as illegal voltage on the upshift paddle input. Contact wear, moisture or a resistor drifting inside the switch are the usual reasons. A paddle held too long belongs to P0815, readings beyond the band to P2776 or P2777. Manual shifting by paddle is normally disabled.

Medium severity. Can I keep driving?Drive as little as possible and gently. If the transmission slips or stays in one gear, go slowly to a repair shop or call for a tow truck.

Symptoms

Upshift paddle has no effect, manual mode unavailable
Message on the cluster, normally no check engine light

Most likely causes

Worn or dirty contacts or drifting coding resistor in the paddle
Added resistance in the clock spring or steering wheel connector
Moisture or spilled liquid in the switch

What to check, in order

Start with the simplest. You can tick off each step.

Check the fluid level and condition according to the manufacturer
Compare the reading with other engine data while varying the engine speed.
Check the transmission connector
Read the data with a transmission-compatible scanner
Measure the solenoid valve circuit
Leave opening the transmission to a specialized repair shop

Good to know

Repair difficulty: medium

What each character of P2775 means

P: Powertrain: engine and transmission
2: Generic code: same on every make
7: Transmission
75: Specific fault in that system

Frequently asked questions

Can I keep driving with code P2775?

Drive as little as possible and gently. If the transmission slips or stays in one gear, go slowly to a repair shop or call for a tow truck.

What causes code P2775?

The most common causes are: worn or dirty contacts or drifting coding resistor in the paddle; added resistance in the clock spring or steering wheel connector; moisture or spilled liquid in the switch.

Related codes

Sources

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.