P0827
Up and Down Shift Switch Circuit Low
Transmission / shift switch
Generic OBD-II
Low
What it means
P0827 means the transmission control module detected a low-voltage or short-to-ground condition in the up/down shift switch circuit — the switch or paddles that let you shift manually in tiptronic-style transmissions. It usually just disables manual shifting and drops the transmission back to fully automatic operation, so it's a minor drivability issue rather than a safety one.
Low
Can I keep driving? Yes — the engine runs and the automatic still shifts on its own. You mainly lose the manual up/down (tiptronic or paddle) shifting until it's fixed.
Common symptoms
What you'll notice
- Manual up/down (tiptronic or paddle) shifting doesn't respond
- Transmission defaults to normal automatic mode
- Check-engine light on
- Manual-mode indicator not displaying correctly
Common causes
Most likely first
- Failed up/down shift switchLikely
- Short to ground or low voltage in the shift-switch wiringCommon
- Corroded or loose connector at the switchCommon
- Failed transmission control module (TCM)Less often
How to diagnose & fix
Work through it in order
- Scan for codes and read freeze-frame data to confirm the fault.
- Inspect the shift-switch wiring and connector for a short to ground, chafing, or corrosion.
- Test the up and down shift switch signals for a stuck-low or shorted condition.
- Replace the shift switch if it reads low or shorted.
- If the switch and wiring are good, suspect the TCM. Clear and re-test.
FAQ
Quick answers
Is it safe to drive with P0827?+
Yes. The transmission still shifts automatically; you just lose manual up/down control until the switch or wiring is repaired.
Can I just clear P0827?+
It will clear, but the low-circuit fault returns unless the shorted wiring or failed switch is fixed.
Related codes
Often seen with P0827
Read & clear P0827 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