P0950
Auto Shift Manual Control Circuit
Transmission / manual-mode control
Generic OBD-II
Low
What it means
P0950 means the transmission control module sees a fault in the auto shift manual control circuit — the switch that lets the driver shift gears manually in a tiptronic-style automatic. A problem here disables or confuses manual mode, but normal automatic shifting continues. The engine still starts and drives normally; this affects only the manual shift feature.
Low
Can I keep driving? Drivable — automatic shifting still works; only the manual (tiptronic) shift mode may be unavailable until repaired.
Common symptoms
What you'll notice
- Check-engine light on
- Unable to shift gears manually in manual/tiptronic mode
- The manual up/down shift switch is unresponsive or erratic
Common causes
Most likely first
- Faulty auto shift manual control switchLikely
- Wiring or connector problems in the manual control circuitCommon
- Loose or corroded connections at the switchCommon
- Failed transmission control module (rare)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and inspect the manual shift (+/-) switch and its connector for damage or corrosion.
- Test the switch's circuit for continuity and correct voltage as it is operated.
- Repair any damaged wiring or loose connections in the control circuit.
- Replace the auto shift manual control switch if it fails to signal with wiring confirmed good. Clear and re-test.
FAQ
Quick answers
Is it safe to drive with P0950?+
Yes. The transmission still shifts automatically; you just lose the manual shift mode until it's repaired.
Can I just clear P0950?+
You can, but it returns whenever the manual control circuit signals incorrectly until the switch or wiring is fixed.
Related codes
Often seen with P0950
Read & clear P0950 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