Powertrain, generic (extended)

P2775 Upshift Switch Circuit Range/Performance

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

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.

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

Symptoms

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

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€60–500
Time0.5–2 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

upshift switchsteering wheel controls

Related codes

P2776P2777P2778P0815P2779

References: gsi.ext.gm.com, gsi.ext.gm.com, fordservicecontent.com.