P0951
Auto Shift Manual Control Circuit Range/Performance
Transmission / manual shift mode
Generic OBD-II
Low
What it means
P0951 means the auto-shift-manual control circuit is reading out of its expected range. This is the circuit behind the manual/Tiptronic shift mode that lets the driver select gears by hand (a +/- gate or paddles). A fault typically disables or confuses manual mode while automatic shifting keeps working.
Low
Can I keep driving? Engine starts and the transmission still shifts automatically; manual (Tiptronic/paddle) mode may not respond — safe to drive, fix at your convenience.
Common symptoms
What you'll notice
- Check-engine or transmission warning light on
- Manual (Tiptronic/paddle) mode not responding
- Erratic behavior when using manual shift mode
- Unresponsive up/down shift switch or paddles
Common causes
Most likely first
- Faulty auto-shift-manual control switch (+/- gate or paddles)Likely
- Wiring or connection issues in the control circuitCommon
- Faulty transmission control module (TCM)Common
- Incorrect TCM programming or calibrationLess often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and inspect the shift switch/paddle connector and wiring.
- Confirm battery voltage is stable, as low voltage can upset the circuit.
- Test the up/down shift switch for correct operation.
- Replace the switch if faulty; check for a TCM software update or reprogramming only if wiring and switch test good. Clear and re-test.
FAQ
Quick answers
Is it safe to drive with P0951?+
Yes. Automatic shifting still works; you simply may not be able to use manual mode until it's repaired.
Can I just clear P0951?+
It clears, but returns if the switch, wiring, or calibration issue remains. Diagnose the circuit first.
Related codes
Often seen with P0951
Read & clear P0951 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