OBD-II code · Powertrain (generic)
P0956 Auto Shift Manual Mode Circuit Range/Performance
The auto-shift manual mode circuit reports a range/performance condition. Manual mode shift requests cannot be reliably interpreted.
Is it safe to drive with P0956?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySwitch contacts aged
- PossibleHigh-resistance contact
- Less likelySensor element aged beyond calibration window
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.3–1.5 h
- Emissions test
- Usually unaffected
- Parts involved
- Auto Shift Manual Switch, Wiring Harness, Tcm
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.