Auto Shift Manual Control Circuit Low
What it means
P0952 means the auto-shift manual control circuit reads an abnormally low voltage. This circuit handles the manual, driver-controlled shift mode on an automatic (the tiptronic-style +/- gate or paddles). The engine and normal automatic shifting are unaffected — the practical effect is that manual mode may stop responding. It's one of the lower-risk transmission codes, usually traced to the switch or its wiring.
Can I keep driving? The engine and automatic shifting work normally; the main effect is that the manual (tiptronic-style) shift mode may not respond, so it's generally safe to keep driving until it's fixed.
Common symptoms
What you'll notice
- Check-engine light on
- Manual up/down shift mode doesn't respond or behaves erratically
- Manual-shift switch feels unresponsive
- Vehicle stays in automatic mode
Common causes
Most likely first
- Faulty auto-shift manual control switchLikely
- Open or short to ground in the control-circuit wiring (reads low)Common
- Loose or corroded connector in the manual-shift circuitCommon
- Low system voltageLess often
- Failed transmission control module (TCM)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and inspect the manual-shift switch connector and wiring for damage, corrosion, or shorts to ground.
- Test the auto-shift manual control switch and replace it if it fails.
- Confirm system voltage is normal and repair any low-voltage issue.
- If the switch and wiring are good, suspect the TCM. Clear and re-test.
FAQ
Quick answers
Is it safe to drive with P0952?+
Can I just clear P0952?+
Related codes
Often seen with P0952
Read & clear P0952 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.