Plausibility fault of the gear shift position signal on circuit A in an automated manual gearbox. The voltage stays within its electrical limits, but the reading does not fit: the signal does not change while the shift actuator moves, or the engaged position does not match the learned gear positions. No manufacturer documents this code in freely citable material. A Nissan/Aichi patent points out that sensor brackets on shift forks can deform under vibration and spoil the reading, and an Aisin AI patent describes the fallback when a stroke sensor can no longer be trusted. CARB requires rationality checks on such inputs. P0914, P0916 and P0917 are the electrical faults, P0919 a shift movement that misses its target. Shifting becomes limited or stops.
Medium severity. Can I keep driving?Drive as little as possible and gently. If the transmission slips or stays in one gear, go slowly to a repair shop or call for a tow truck.
Symptoms
- Check engine or transmission warning light on
- Gearbox drops to neutral while driving
- Gears refused or engaged only after a delay
Most likely causes
- Worn or drifting shift position sensor, redundant tracks disagree
- Bent sensor bracket or displaced magnet on the shift rod
- Gear positions not relearned after actuator or TCM replacement
- High resistance at connector pins distorting the signal
What to check, in order
Start with the simplest. You can tick off each step.
Good to know
- Repair difficulty: hard
- It can trigger limp mode.
- It affects emissions.
What each character of P0915 means
- P: Powertrain: engine and transmission
- 0: Generic code: same on every make
- 9: Transmission
- 15: Specific fault in that system
Frequently asked questions
Can I keep driving with code P0915?
Drive as little as possible and gently. If the transmission slips or stays in one gear, go slowly to a repair shop or call for a tow truck.
What causes code P0915?
The most common causes are: worn or drifting shift position sensor, redundant tracks disagree; bent sensor bracket or displaced magnet on the shift rod; gear positions not relearned after actuator or TCM replacement.
Related codes
- P0914Gear Shift Position Circuit A
- P0916Gear Shift Position Circuit A Low
- P0917Gear Shift Position Circuit A High
- P0918Gear Shift Position Circuit A Intermittent
- P0919Gear Shift Position Control Error
- P091BGear Shift Position Circuit B Range/Performance
Sources
Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.