P07CFTransmission Mode Switch D Circuit Low
- Generic OBD-II code · Powertrain
- How the car detects it
- Transmission mode switches select alternative shift programs such as sport, winter or tow/haul; the J2012 family runs from A (P071A–P071C) and B (P071D–P071F) to C (base code P078F), D and E. No manufacturer document available to us uses switches C to E; GM reads its analog mode switch under its own codes (low below 21–29 % of 5 V, high from 94 %, two trips) and newer drive mode selectors under P05D0–P05D3. P07CF means the signal of mode switch D is below its lower limit – a short to ground or a button stuck against ground. The opposite is P07D0.
- What you may notice
- Mode D cannot be selected or stays active
- Mode indicator missing or flashing
- Transmission stays on the normal program
- Likely causes
- LikelySignal wire shorted to ground
- PossibleButton stuck pressed (switching to ground)
- PossibleMoisture or dirt in the button
- RareControl module
- Repair
- Easy · Often possible to do yourself.Typical cost: €30 – €300
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.