P0957
Auto Shift Manual Mode Circuit Low
Transmission
Generic OBD-II
Medium
What it means
P0957 means the transmission control module sees an abnormally low voltage on the driver-selectable manual/sport shift (Tiptronic-style) mode circuit. It usually points to a wiring, connector, or selector-switch fault. The car still drives in automatic mode — you typically just lose the manual shift feature until the circuit is repaired.
Medium
Can I keep driving? Usually drivable — the automatic mode still works; you may just lose the manual/sport shift feature until it's fixed.
Common symptoms
What you'll notice
- Check-engine light on
- Manual / sport (Tiptronic) shift mode won't engage or responds erratically
- Gear-position or mode indicator on the dash acts up
- Transmission stays in normal automatic mode only
Common causes
Most likely first
- Wiring or connector fault at the manual-mode selector / shift switch (short to ground)Likely
- Faulty manual-mode up/down selector switchCommon
- Corroded or loose electrical connections in the shifter circuitCommon
- Failed transmission control module (TCM)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and check for related shift-selector codes (P0955–P0959).
- Inspect the shifter/selector connector and wiring for damage, corrosion, or a short to ground.
- Test the manual-mode selector switch signal through its range; replace the switch if out of spec.
- If wiring and switch check out, have the TCM diagnosed. Clear and re-test.
FAQ
Quick answers
Is it safe to drive with P0957?+
Generally yes. The transmission still shifts in normal automatic mode; you mainly lose the manual/sport shift function. Get it checked so no other transmission faults are hiding behind it.
Can I just clear P0957?+
You can, but if the selector switch or its wiring is faulty the code returns. Fix the circuit first.
Related codes
Often seen with P0957
Read & clear P0957 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